Found 1475 results, showing the newest relevant preprints. Sort by relevancy only.Update me on new preprints

Black Hole Interiors via Spin Models

We test the conjecture that a particular mean field Hamiltonian provides such a local bulk Hamiltonian by numerically solving the exact Schrodinger equation and comparing the time evolution to the approximate mean field time values. Expand abstract.
103 days ago
4/10 relevant
arXiv

Local-field Theory of the BCS-BEC Crossover

We develop a self-consistent theory unifying the description of a quantum Fermi gas in the presence of a Fano-Feshbach resonance in the whole phase diagram ranging from BCS to BEC type of superfluidity and from narrow to broad resonances, including the fluctuations beyond mean field. Expand abstract.
104 days ago
4/10 relevant
arXiv

Cell Model Approaches for Predicting the Swelling and Mechanical Properties of Polyelectrolyte Gels

The second mean-field step integrates out the degrees of freedom of the flexible chain and the ions. Expand abstract.
104 days ago
5/10 relevant
arXiv

Model for heterogeneous reaction-diffusion systems with application to one epidemic

Both the detailed and the mean-field models are solved by means of the standard finite volume method. Expand abstract.
108 days ago
5/10 relevant
arXiv

Elastic avalanches reveal marginal behaviour in amorphous solids

In this work, we characterize this distribution for simple models of glass forming systems, and we find that its scaling is compatible with the mean field predictions for systems above the jamming transition. Expand abstract.
109 days ago
4/10 relevant
arXiv

Discrete-time average-cost mean-field games on Polish spaces

Then, we show that the equilibrium policy in the mean-field game, when adopted by each agent, is an approximate Nash equilibrium for the corresponding finite-agent game with sufficiently many agents. Expand abstract.
110 days ago
10/10 relevant
arXiv

Fermionic entanglement in the Lipkin model

We finally show that the first measures and the up-down reduced entanglement can be correctly described through a basic mean-field approach supplemented with symmetry restoration, whereas the concurrence requires at least the inclusion of RPA-type correlations for a proper prediction. Expand abstract.
110 days ago
4/10 relevant
arXiv

Dynamical slave-boson mean-field study of the Mott transition in the Hubbard model in the large-$z$ limit

The Mott metal-insulator transition in the Hubbard model is studied by constructing a dynamical slave-boson mean-field theory in the limit of large lattice coordination number $z$ that incorporates the binding between doubly occupied (doublon) and empty (holon) sites. Expand abstract.
110 days ago
10/10 relevant
arXiv

The selection problem for some first-order stationary mean-field games

Using ideas from Aubry-Mather theory, we establish a selection criterion for the limit. Expand abstract.
114 days ago
8/10 relevant
arXiv

Magnetic Entropy in a Non-Collinear Weak Ferromagnetic YCrO3

The maximum entropy change fits well with mean field approximation at higher fields, while the observed deviation in lower field substantiates the onset of weak ferromagnetism in YCrO3. Expand abstract.
114 days ago
5/10 relevant
arXiv