Found 2863 results, sorted by relevancy. Show newest relevant.Update me on new preprints

Localized solutions of the Dirac equation in free space and electromagnetic space-time crystals

Localized solutions describing the families of orthonormal beams in electromagnetic space-time crystals and free space, defined by a given set of orthonormal complex scalar functions on a two-dimensional manifold, are obtained. Expand abstract.
157 days ago
10/10 relevant
arXiv

ESA Voyage 2050 white paper -- GrailQuest: hunting for Atoms of Space and Time hidden in the wrinkle of Space-Time

Although the predicted discrepancies are minuscule, Gamma-Ray Bursts, occurring at cosmological distances, could be used to detect this signature of space-time granularity with a new concept of modular observatory of huge overall collecting area consisting in a fleet of small satellites in low orbits, with sub-microsecond time... Expand abstract.
111 days ago
10/10 relevant
arXiv

Waves of space-time from a collapsing compact object

We study the partial time dependent collapse of a spherically symmetric compact object with initial mass $M_1+M_2$ and final mass $M_2$ and the waves of space-time emitted during the collapse via back-reaction effects. Expand abstract.
131 days ago
10/10 relevant
arXiv

Tunable space-time crystal in room-temperature magnetodielectrics

The proposed space-time crystals provide a new dimension for exploring dynamical phases of matter and can serve as a model nonlinear Floquet system, that brings in touch the rich fields of classical nonlinear waves, magnonics and periodically driven systems. Expand abstract.
467 days ago
10/10 relevant
arXiv

A space-time hybridizable discontinuous Galerkin method for linear free-surface waves

In order to show well-posedness, our space-time HDG formulation makes use of weighted inner products. Expand abstract.
131 days ago
10/10 relevant
arXiv

Transfer matrix method for the analysis of space-time modulated media and systems

The proposed method provides a versatile approach for the study of general space-time varying systems, which allows any number of time-modulated elements with arbitrary modulation profile, facilities the investigation of high order modes, and provides an interface between space-time modulated systems and other systems. Expand abstract.
275 days ago
10/10 relevant
arXiv

Stochastic Local Interaction Model with Sparse Precision Matrix for Space-Time Interpolation

For data on regular space-time lattices, the stochastic local interaction model is equivalent to a Gaussian Markov Random Field. Expand abstract.
369 days ago
10/10 relevant
arXiv

Quantum thermodynamics in a static de Sitter space-time and initial state of the universe

Using Relativistic Quantum Geometry we study back-reaction effects of space-time inside the causal horizon of a static de Sitter metric, in order to make a quantum thermodynamical description of space-time. Expand abstract.
179 days ago
10/10 relevant
arXiv

Cosmic acceleration via space-time-matter theory

Moreover, we derive the geodesic deviation equation in the STM theory to study the relative acceleration of the parallel geodesics of this space-time, and also, obtain the observer area-distance as a measurable quantity to compare this theory with two other models. Expand abstract.
201 days ago
10/10 relevant
arXiv

Space-time random walk loop measures

In this work, we investigate a novel setting of Markovian loop measures and introduce a new class of loop measures called Bosonic loop measures. Expand abstract.
330 days ago
10/10 relevant
arXiv