last week in physics

718

new preprints about physics in the last week

arXiv

most active server in physics in the last week

high energy

21 preprints

Multi-messenger Gravitational-Wave + High-Energy Neutrino Searches with LIGO, Virgo, and IceCube

We present the latest sensitivity of joint searches and discuss the Low-Latency Algorithm for Multi-messenger Astrophysics (LLAMA) that combines LIGO/Virgo gravitational-wave candidates and searches in low-latency for coincident high-energy neutrinos from the IceCube Neutrino Observatory.
5 days ago
arXiv

Search for high-energy neutrinos from AGN cores

We perform a stacking analysis to test for correlation between various sub-populations of AGN and high-energy neutrinos using a decade of IceCube data.
5 days ago
arXiv

Searching for High-Energy Neutrino Emission from TeV Pulsar Wind Nebulae

We report a stacking analysis to search for neutrino emission from 35 PWNe that are very-high-energy gamma-ray emitters and the results using 9.5 years of all-sky IceCube data.
5 days ago
arXiv

magnetic fields

21 preprints

Feynman Path Integral of a charged anisotropic HO in crossed electric and magnetic fields. Alternative calculational methods

In the present paper the author evaluates the path integral of a charged anisotropic Harmonic Oscillator (HO) in crossed electric and magnetic fields by two alternative methods.
6 days ago
arXiv

New Limits on Charged Dark Matter from Large-Scale Coherent Magnetic Fields

We study the interaction of an electrically charged component of the dark matter with a magnetized galactic interstellar medium (ISM) of (rotating) spiral galaxies.
5 days ago
arXiv

Hall conductivity as the topological invariant in phase space in the presence of interactions and non-uniform magnetic field

The quantum Hall conductivity in the presence of constant magnetic field may be represented as the topological TKNN invariant.
7 days ago
arXiv

gamma rays

19 preprints

Studying Cosmic-ray Interactions in Giant Molecular Clouds with the HAWC Gamma-ray Observatory

The cosmic-ray flux in the Galaxy can be characterized by combining the knowledge of the distribution of gas in the Galaxy and the observation of gamma rays.
3 days ago
arXiv

Sensitivity Improvements of Very-High-Energy Gamma-Ray Detection with the Upgraded H.E.S.S. I Cameras using Full Waveform Processing

S.) is an array of five imaging atmospheric Cherenkov telescopes in Namibia observing gamma-rays in the energy range from a few tens of GeV to a few tens of TeV.
6 days ago
arXiv

Subsystem Development for the All-Sky Medium Energy Gamma-ray Observatory (AMEGO) prototype

The gamma-ray sky from several hundred keV to $\sim$ a hundred MeV has remained largely unexplored due to the challenging nature of detecting gamma rays in this regime.
7 days ago
arXiv

field theory

17 preprints

Low-energy effective field theory below the electroweak scale: matching at one loop

We compute the one-loop matching between the Standard Model Effective Field Theory and the low-energy effective field theory below the electroweak scale, where the heavy gauge bosons, the Higgs particle, and the top quark are integrated out.
5 days ago
arXiv

Effective field theory and scalar extensions of the top quark sector

Effective field theory (EFT) approaches are widely used at the LHC, such that it is important to study their validity, and ease of matching to specific new physics models.
4 days ago
arXiv

A model field theory with $(\psi \ln \psi)^2$ potential: Kinks with super-exponential profiles

We study a (1+1)-dimensional field theory based on $(\psi \ln \psi)^2$ potential.
5 days ago
arXiv

black holes

17 preprints

Relativistic reflection spectra of super-spinning black holes

We construct a relativistic reflection model in a non-Kerr spacetime in which, depending on the value of the deformation parameter of the metric, there are black hole solutions with spin parameter $
5 days ago
arXiv

Charged accelerating black hole in $f(R)$ gravity

We obtain a charged accelerating AdS black hole solution in $f(R)$ gravity and investigate its thermodynamic behaviour.
5 days ago
arXiv

Detectability of Intermediate-Mass Black Holes in Multiband Gravitational Wave Astronomy

The direct measurement of gravitational waves is a powerful tool for surveying the population of black holes across the universe.
5 days ago
arXiv

dark matter

14 preprints

Forbidden frozen-in dark matter

We identify the resulting ranges of parameters that are consistent with the correct dark matter relic abundance and further apply current and expected future collider, cosmological, and astrophysical limits.
4 days ago
arXiv

Exploring galaxy dark matter halos across redshifts with strong quasar absorbers

Quasar lines of sight intersect intervening galaxy discs or circum-galactic environments at random impact parameters and potential well depths.
5 days ago
arXiv

Fuzzy Dark Matter Soliton Cores around Supermassive Black Holes

We explore the effect of a supermassive black hole (SMBH) on the density profile of a fuzzy dark matter (FDM) soliton core at the centre of a dark matter halo.
6 days ago
arXiv

neutron stars

12 preprints

Asymmetric accretion and thermal `mountains' in magnetized neutron star crusts

In this paper we consider a natural source of asymmetry, namely the magnetic field, and calculate the density and pressure perturbations that are expected in the crust of accreting neutron stars.
5 days ago
arXiv

Smooth equations of state for high-accuracy simulations of neutron star binaries

High-accuracy numerical simulations of merging neutron stars play an important role in testing and calibrating the waveform models used by gravitational wave observatories.
5 days ago
arXiv

Thermal evolution of neo-neutron stars. I: envelopes, Eddington luminosity phase and implications for GW170817

We finally discuss the observational prospects for neutron star mergers triggered by LIGO and for accretion-induced collapse transients.
6 days ago
arXiv

standard model

11 preprints

Relativistic many body theory of the electric dipole moment of $^{129}$Xe and its implications for probing new physics beyond the Standard Model

We report the results of our theoretical studies of the time-reversal and parity violating electric dipole moment (EDM) of $^{129}$Xe arising from the nuclear Schiff moment (NSM) and the electron-nucleus tensor-pseudotensor (T-PT) interaction based on the self-consistent and the normal relativistic coupled-cluster methods.
7 days ago
arXiv

Dark CP Violation and Gauged Lepton/Baryon Number for Electroweak Baryogenesis

We explore the generation of the baryon asymmetry in an extension of the Standard Model where the lepton number is promoted to a $U(1)_\ell$ gauge symmetry with an associated $Z^\prime$ gauge boson.
6 days ago
arXiv

Understanding CMB physics through the exploration of exotic cosmological models: a classroom study using CLASS

Every cosmology lecturer these days is confronted with teaching the modern cosmological standard model $\Lambda$CDM, and there are many approaches to do this.
5 days ago
arXiv

many body

11 preprints

Many-body localization landscape

Using the MBLL and the locator expansion, we provide considerable analytical evidence for the existence of many-body localization for a wide-class of lattice models in any physical dimension for at least a part of their Hilbert space.
5 days ago
arXiv

Critical behaviors of the entanglement and participation entropy near the many-body localization transition in a disordered quantum spin chain

The transition between many-body localized states and the delocalized thermal states is an eigen-state phase transition at finite energy density outside the scope of conventional quantum statistical mechanics.
7 days ago
arXiv

Many-body localization in XY spin chains with random long-range interactions: An exact diagonalization study

We investigate the transition from many-body localization phase to ergodic thermalized phase at an infinite temperature in an $XY$ spin chain with $L$ spins, which experiences random power-law decaying interactions in the form of $V_{ij}\propto1/\
7 days ago
arXiv

ground state

11 preprints

Ground State Wave Function Overlap in Superconductors and Superfluids

In order to elucidate the role of spontaneous symmetry breaking in condensed matter systems, we explicitly construct the ground state wave function for a nonrelativistic theory of a two-fluid system of bosons.
6 days ago
arXiv

Magnetic ground state of distorted 6H perovskite Ba$_3$CdIr$_2$O$_9$

Perovskite iridates of 6H hexagonal structure present a plethora of possibilities in terms of the variety of ground states resulting from a competition between spin-orbit coupling (SOC), hopping, noncubic crystal field ($\Delta_{CFE}^{NC}$) and superexchange energy scales within the Ir$_2$O$_9$ dimers.
5 days ago
arXiv

Breakdown of intermediate one-half magnetization plateau of spin-1/2 Ising-Heisenberg and Heisenberg branched chains at triple and Kosterlitz-Thouless critical points

The intermediate one-half plateau of the spin-1/2 Heisenberg branched chain vanishes at Kosterlitz-Thouless quantum critical point between gapful and gapless quantum ground states unlike the triple point of the spin-1/2 Ising-Heisenberg branched chain.
4 days ago
arXiv

gravitational waves

10 preprints

Detecting Gravitational Waves in Data with Non-Gaussian Noise

Searches for gravitational waves crucially depend on exact signal processing of noisy strain data from gravitational wave detectors, which are known to exhibit significant non-Gaussian behavior.
4 days ago
arXiv

Multi-messenger Gravitational-Wave + High-Energy Neutrino Searches with LIGO, Virgo, and IceCube

Multi-messenger searches for gravitational waves and high-energy neutrinos provide important insights into the dynamics of and particle acceleration by black holes and neutron stars.
5 days ago
arXiv

Cosmological Inference using Gravitational Wave Standard Sirens: A Mock Data Challenge

The detection of gravitational waves from the binary neutron star merger GW170817 alongside its optical counterparts, marked the beginning of gravitational wave cosmology as it allowed for the first constraint onthe Hubble constant $H_0$ using gravitational wave standard sirens.
3 days ago
arXiv

mean field

9 preprints

Mean Field Game for Linear Quadratic Stochastic Recursive Systems

This paper focuses on linear-quadratic (LQ for short) mean-field games described by forward-backward stochastic differential equations (FBSDEs for short), in which the individual control region is postulated to be convex.
5 days ago
arXiv

Scrambled Mean Field Approach to the Quantum Dynamics of Degenerate Bose Gases

We present a novel approach to modeling dynamics of trapped, degenerate, weakly interacting Bose gases beyond the mean field limit.
6 days ago
arXiv

Polyakov linear-sigma model in mean-field approximation and optimized perturbation theory

We compare results from the Polyakov linear-sigma model (PLSM) in optimized perturbation theory (OPT) with the mean-field approximation (MFA).
3 days ago
arXiv

star formation

9 preprints

On The Role of Supermassive Black Holes in Quenching Star Formation in Local Central Galaxies

These tensions may be due to the treatment of galaxies living in non-resolved substructures and the resulting higher merger rates that could bring cold gas which is available for star formation.
6 days ago
arXiv

Living with Neighbors. I. Observational Clues to Hydrodynamic Impact of Neighboring Galaxies on Star Formation

This seems to be due to removal of gas reservoirs via ram pressure stripping and gas accretion cutoff by hot gas halos of quiescent neighbors, on top of their paucity of ISM to collide to form stars.
5 days ago
arXiv

The Formation of Ultra-Diffuse Galaxies from Passive Evolution in the RomulusC Galaxy Cluster Simulation

We study the origins of 122 ultra-diffuse galaxies (UDGs) in the RomulusC zoom-in cosmological simulation of a galaxy cluster (M$_{200} = 1.15 \times 10^{14}$ M$_{\odot}$), one of the only such simulations capable of resolving the evolution and structure of dwarf galaxies (M$_{\star} < 10^9$ M$_{\odot}$).
4 days ago
arXiv

spin orbit

9 preprints

Short-scale quantum kinetic theory including spin-orbit interactions

We present a quantum kinetic theory for spin-$1/2$ particles, including the spin-orbit interaction, retaining particle dispersive effects to all orders in $\hbar$, based on a gauge-invariant Wigner transformation.
5 days ago
arXiv

Analytic Solutions to Compact Binary Inspirals With Leading Order Spin-Orbit Contribution Using The Dynamical Renormalization Group

The solutions are written in a moving reference frame, with the orbital angular momentum and binary radial directions aligned along two of the axes.
4 days ago
arXiv

Spin-orbital glass transition in a model frustrated pyrochlore magnet without quenched disorder

The interplay of spins and orbitals is mediated by the Jahn-Teller lattice distortion that selects the choice of orbitals and vary the sign of the spin exchange interactions.
5 days ago
arXiv

energy neutrinos

9 preprints

Multi-messenger Gravitational-Wave + High-Energy Neutrino Searches with LIGO, Virgo, and IceCube

We present the latest sensitivity of joint searches and discuss the Low-Latency Algorithm for Multi-messenger Astrophysics (LLAMA) that combines LIGO/Virgo gravitational-wave candidates and searches in low-latency for coincident high-energy neutrinos from the IceCube Neutrino Observatory.
5 days ago
arXiv

Search for high-energy neutrinos from AGN cores

We perform a stacking analysis to test for correlation between various sub-populations of AGN and high-energy neutrinos using a decade of IceCube data.
5 days ago
arXiv

Investigation of Ultra-Luminous Infrared Galaxies as Obscured High-Energy Neutrino Source Candidates

Ultra-Luminous Infrared Galaxies (ULIRGs) are the most luminous objects in the infrared sky.
5 days ago
arXiv

low energy

9 preprints

Low-energy effective field theory below the electroweak scale: matching at one loop

We compute the one-loop matching between the Standard Model Effective Field Theory and the low-energy effective field theory below the electroweak scale, where the heavy gauge bosons, the Higgs particle, and the top quark are integrated out.
5 days ago
arXiv

Low-energy type-II Dirac fermions and spin-polarized topological surface states in transition-metal dichalcogenide NiTe$_2$

Using spin- and angle- resolved photoemission spectroscopy (spin-ARPES) together with ${\it ab~initio}$ calculations, we demonstrate the existence of a type-II Dirac semimetal state in NiTe$_2$.
7 days ago
arXiv

Defect Physics of Pseudo-cubic Mixed Halide Lead Perovskites from First Principles

Further, we study extrinsic substitution by different elements at the Pb site in MAPbBr_{3}, MAPbCl_{3} and the 50-50 mixed halide perovskite, MAPbBr_{1.5}Cl_{1.5}, and identify some transition metals that create lower energy defects than the dominant intrinsic defects and also create mid-gap charge transition levels.
4 days ago
arXiv

phase transitions

8 preprints

Liquid-Hextic-Solid Phase Transition of a Hard-Core Lattice Gas with Third Neighbor Exclusion

Insight into coexistence regions and phase transitions is obtained through direct visualization of the system at any fractional surface coverage via local bond orientation order.
4 days ago
arXiv

Aluminum oxide phase transitions from cluster to nanoparticle

Despite being the simplest in its mathematical formulation, the same potential also manages to reproduce two phase transitions that were found experimentally: from amorphous solid to cubic crystal (gamma) and from cubic to hexagonal (alpha, i.e. corundum) crystal.
5 days ago
arXiv

Non-stationary Statistics and Formation Jitter in Transient Photon Condensation

We thus identify universal features, such as the formation timing jitter, for a larger set of systems undergoing transient phase transitions.
4 days ago
arXiv

degrees of freedom

7 preprints

Fully-resolved wave-structure interaction simulations of a submerged cylindrical point absorber with three degrees of freedom

In this paper we present a fictitious domain Brinkman penalization (FD/BP) method for simulating wave-structure interactions (WSI) of a submerged cylindrical point absorber with three free degrees of freedom (DOF).
5 days ago
arXiv

Parity violating Friedmann Universes

We revisit models, within the Einstein-Cartan theory, where the cosmological constant $\Lambda$ is promoted to a variable, at the cost of allowing for torsion even in the absence of spinors.
5 days ago
arXiv

Dark CP Violation and Gauged Lepton/Baryon Number for Electroweak Baryogenesis

We explore the generation of the baryon asymmetry in an extension of the Standard Model where the lepton number is promoted to a $U(1)_\ell$ gauge symmetry with an associated $Z^\prime$ gauge boson.
6 days ago
arXiv

high energy neutrinos

7 preprints

Search for high-energy neutrinos from AGN cores

We perform a stacking analysis to test for correlation between various sub-populations of AGN and high-energy neutrinos using a decade of IceCube data.
5 days ago
arXiv

Multi-messenger Gravitational-Wave + High-Energy Neutrino Searches with LIGO, Virgo, and IceCube

We present the latest sensitivity of joint searches and discuss the Low-Latency Algorithm for Multi-messenger Astrophysics (LLAMA) that combines LIGO/Virgo gravitational-wave candidates and searches in low-latency for coincident high-energy neutrinos from the IceCube Neutrino Observatory.
5 days ago
arXiv

Investigation of Ultra-Luminous Infrared Galaxies as Obscured High-Energy Neutrino Source Candidates

Ultra-Luminous Infrared Galaxies (ULIRGs) are the most luminous objects in the infrared sky.
5 days ago
arXiv

cosmic rays

6 preprints

Studying Cosmic-ray Interactions in Giant Molecular Clouds with the HAWC Gamma-ray Observatory

The cosmic-ray flux in the Galaxy can be characterized by combining the knowledge of the distribution of gas in the Galaxy and the observation of gamma rays.
3 days ago
arXiv

Cosmic Ray Extremely Distributed Observatory: Status and perspectives of a global cosmic ray detection framework

The key idea of CREDO is to combine existing cosmic-ray detectors (large professional arrays, educational instruments, individual detectors, such as smartphones, etc.) into a worldwide network, thus enabling a global analysis.
7 days ago
arXiv

A novel approach for deducing the mass composition of cosmic rays from lateral densities of EAS particles

A Monte Carlo (MC) simulation study of cosmic ray (CR) extensive air showers (EAS) has been carried out in the energy regime of the KASCADE experiment.
7 days ago
arXiv

new physics

6 preprints

New physics and tau $g-2$ using LHC heavy ion collisions

The anomalous magnetic moment of the tau lepton $a_\tau = (g_\tau -2)/2$ strikingly evades measurement, but is highly sensitive to new physics such as compositeness or supersymmetry.
5 days ago
arXiv

Relativistic many body theory of the electric dipole moment of $^{129}$Xe and its implications for probing new physics beyond the Standard Model

We report the results of our theoretical studies of the time-reversal and parity violating electric dipole moment (EDM) of $^{129}$Xe arising from the nuclear Schiff moment (NSM) and the electron-nucleus tensor-pseudotensor (T-PT) interaction based on the self-consistent and the normal relativistic coupled-cluster methods.
7 days ago
arXiv

On the nature of correlation between neutrino-SM CP phase and unitarity violating new physics parameters

To perform leptonic unitarity test, understanding the system with the three-flavor active neutrinos with non-unitary mixing is required, in particular, on its evolution in matter and the general features of parameter correlations.
6 days ago
arXiv

quantum dots

5 preprints

Tailoring the emission wavelength and s-p splitting in MOCVD-grown InGaAs/GaAs quantum dots emitting above 1.3 {\mu}m

The electronic structure of strain-engineered In$_{0.75}$Ga$_{0.25}$As/GaAs quantum dots emitting in the telecommunication O band is probed experimentally by photoluminescence excitation spectroscopy on the single-dot level.
5 days ago
arXiv

Spin beats in the photoluminescence polarization dynamics of charged excitons in InP/(In,Ga)P quantum dots in presence of nuclear quadrupole interaction

The spin dynamics of positively (X$^{+}$) and negatively (X$^{-}$) charged excitons in InP/In$_{0.48}$Ga$_{0.52}$P quantum dots subject to a magnetic field is studied.
7 days ago
arXiv

Driven quantum dot coupled to a fractional quantum Hall edge

In relation to recent electron quantum optics experiments we study a model of a quantum dot coupled to a fractional quantum Hall edge driven out of equilibrium by a time-dependent bias voltage.
4 days ago
arXiv

baikal gvd

5 preprints

Search for cascade events with Baikal-GVD

We present here preliminary results of the search for high-energy neutrinos via the cascade mode with the Baikal-GVD neutrino telescope.
4 days ago
arXiv

The Baikal-GVD detector calibration

The Baikal-GVD is thus the largest neutrino telescope on the Northern Hemisphere.
4 days ago
arXiv

The Baikal-GVD neutrino telescope: First results of multi-messenger studies

Two Baikal-GVD clusters were operating during 2017.
4 days ago
arXiv

neutron star mergers

5 preprints

Thermodynamics conditions of matter in the neutrino decoupling region during neutron star mergers

Neutrino-matter interactions play a key role in binary neutron star mergers.
5 days ago
arXiv

Inferring prompt black-hole formation in neutron star mergers from gravitational-wave data

The gravitational-wave GW170817 is associated to the inspiral phase of a binary neutron star coalescence event.
4 days ago
arXiv

Using failed supernovae to constrain the Galactic r-process element production

Although being rare, neutron star mergers alone have difficulties to explain the observed enhancement of r-process elements in the lowest metallicity stars compared to Fe.
4 days ago
arXiv

high redshift galaxies

3 preprints

Measuring dynamical masses from gas kinematics in simulated high-redshift galaxies

Our analysis covers a wide range of galaxy properties, from low-redshift Milky-Way-mass galaxies to massive high-redshift galaxies (M_* > 10^11 M_sun at z=1).
5 days ago
arXiv

Theoretical ISM pressure and electron density diagnostics for local and high-redshift galaxies

As H II regions become resolved at increasingly high redshift through the next generation telescopes, we anticipate that these diagnostics will be important for understanding the conditions around the young, hot stars from the early universe to the present day.
4 days ago
arXiv

Predicting Ly$\alpha$ Emission from Galaxies via Empirical Markers of Production and Escape in the KBSS

Ly$\alpha$ emission is widely used to detect and confirm high-redshift galaxies and characterize the evolution of the intergalactic medium.
6 days ago
arXiv