Results 61 to 70 of about 406 (180)
Short Wavelength Limit of the Dynamic Matsubara Local Field Correction
Contributions to Plasma Physics, Volume 65, Issue 8-9, October 2025.ABSTRACT We investigate the short wavelength limit of the dynamic Matsubara local field correction G˜q,zl$$ \tilde{G}\left(\mathbf{q},{z}_l\right) $$ of the uniform electron gas based on direct ab initio path integral Monte Carlo (PIMC) results over an unprecedented range of wavenumbers, q≲20qF$$ q\lesssim 20{q}_{\mathrm{F}} $$, where qF$$ {q}_{\mathrm{
Tobias Dornheim +3 more
wiley +1 more source
A lattice pairing-field approach to ultracold Fermi gases
SciPost PhysicsWe develop a pairing-field formalism for ab initio studies of non-relativistic two-component fermions on a (d+1)-dimensional spacetime lattice. More specifically, we focus on theories where the interaction between the two components can be described by ...
Florian Ehmann, Joaquín E. Drut, Jens Braun
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Two‐Time Quantum Fluctuations Approach and Its Relation to the Bethe–Salpeter Equation
physica status solidi (b), Volume 261, Issue 9, September 2024.The Bethe–Salpeter equation is combined with the generalized Kadanoff–Baym ansatz to derive a two‐time version of the GW approximation. This approximation is compared to the polarization approximation to show the relation between the two‐time fluctuations approach and the Bethe–Salpeter equation. Nonequilibrium results for the density response function
Erik Schroedter, Michael Bonitz
wiley +1 more source
New Journal of Physics, 2015 Spectroscopic measurements are made and obtained for three molecular levels within 50 MHz of the atomic continuum, along with their variation of magnetic field in ultracold ^40 K Fermi gases.
Lianghui Huang +7 more
doaj +1 more source
Exactly solvable models and ultracold Fermi gases [PDF]
Journal of Statistical Mechanics: Theory and Experiment, 2010 based on an invited talk at Statphys24, Cairns (Australia) 2010.
Batchelor, Murray +3 more
openaire +3 more sources
Accelerating Nonequilibrium Green Functions Simulations: The G1–G2 Scheme and Beyond
physica status solidi (b), Volume 261, Issue 9, September 2024.This article reviews recent developments in the theory of nonequilibrium Green functions (NEGF) where dramatic accelerations are achieved within the time‐local G1–G2 scheme. As a result, longer simulations with more accurate selfenergies are possible. The figure shows an illustration ‐ optical excitation of graphene by a short laser pulse: snapshot of ...
Michael Bonitz +5 more
wiley +1 more source
Fulde–Ferrell superfluidity in ultracold Fermi gases with Rashba spin–orbit coupling
New Journal of Physics, 2013 We theoretically investigate the inhomogeneous Fulde–Ferrell (FF) superfluidity in a three-dimensional atomic Fermi gas with Rashba spin–orbit coupling near a broad Feshbach resonance.
Hui Hu, Xia-Ji Liu
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Optical lattice experiments at unobserved conditions with generative adversarial deep learning
Physical Review Research, 2021 Optical lattice experiments with ultracold atoms allow for the experimental realization of contemporary problems in many-body physics. Yet, devising models that faithfully describe experimental observables is often difficult and problem dependent; there ...
Corneel Casert +4 more
doaj +1 more source
Making, probing and understanding ultracold Fermi gases
La Rivista del Nuovo Cimento, 2008 Long review article, 206 pages, 74 figures, to appear in Ultracold Fermi Gases, Proceedings of the International School of Physics "Enrico Fermi", Course CLXIV, Varenna, 20 - 30 June 2006, edited by M. Inguscio, W. Ketterle, and C.
Ketterle W., Zwierlein M. W.
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Classical and quantum theory of fluctuations for many‐particle systems out of equilibrium
Contributions to Plasma Physics, Volume 64, Issue 5, June 2024.Abstract Correlated classical and quantum many‐particle systems out of equilibrium are of high interest in many fields, including dense plasmas, correlated solids, and ultracold atoms. Accurate theoretical description of these systems is challenging both, conceptionally and with respect to computational resources.
E. Schroedter, M. Bonitz
wiley +1 more source