Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Drut, Joaquin E."'
We explore a generalization of nonrelativistic fermionic statistics that interpolates between bosons and fermions, in which up to $K$ particles may occupy a single-particle state. We show that it can be mapped exactly to $K$ flavors of fermions with
Externí odkaz:
http://arxiv.org/abs/2404.18743
Autor:
Miller, Aaron M., Drut, Joaquín E.
Using schematic model potentials, we calculate exactly the virial coefficients of a classical gas up to sixth order and use them to assess the convergence properties of the virial expansion of basic thermodynamic quantities such as pressure, density,
Externí odkaz:
http://arxiv.org/abs/2307.13170
Publikováno v:
SciPost Phys. 16, 091 (2024)
We 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 desc
Externí odkaz:
http://arxiv.org/abs/2212.12298
We non-perturbatively study pairing in the high-temperature regime of polarized unitary two-component Fermi gases by extracting the pair-momentum distribution and shot-noise correlations. Whereas the pair-momentum distribution allows us to analyze th
Externí odkaz:
http://arxiv.org/abs/2112.07309
Publikováno v:
Condens. Matter 2022, 7(1), 13
The virial expansion provides a non-perturbative view into the thermodynamics of quantum many-body systems in dilute regimes. While powerful, the expansion is challenging as calculating its coefficients at each order $n$ requires analyzing (if not so
Externí odkaz:
http://arxiv.org/abs/2112.07744
Autor:
Lu, Bing-Nan, Li, Ning, Elhatisari, Serdar, Lee, Dean, Drut, Joaquín E., Lähde, Timo A., Epelbaum, Evgeny, Meißner, Ulf-G.
We show that the {\it ab initio} calculations of nuclear thermodynamics can be performed efficiently using lattice effective field theory. The simulations use a new approach called the pinhole trace algorithm to calculate thermodynamic observables fo
Externí odkaz:
http://arxiv.org/abs/2112.01392
Publikováno v:
Phys. Rev. A 103, 043330 (2021)
We theoretically study the pairing behavior of the unitary Fermi gas in the normal phase. Our analysis is based on the static spin susceptibility, which characterizes the response to an external magnetic field. We obtain this quantity by means of the
Externí odkaz:
http://arxiv.org/abs/2102.05911
Publikováno v:
Phys. Rev. Lett. 125, 060403 (2020)
Strongly correlated Fermi systems with pairing interactions become superfluid below a critical temperature $T_c$. The extent to which such pairing correlations alter the behavior of the liquid at temperatures $T > T_c$ is a subtle issue that remains
Externí odkaz:
http://arxiv.org/abs/2004.05014
Publikováno v:
SciPost Phys. 9, 014 (2020)
We study spin- and mass-imbalanced mixtures of spin-$\tfrac{1}{2}$ fermions interacting via an attractive contact potential in one spatial dimension. Specifically, we address the influence of unequal particle masses on the pair formation by means of
Externí odkaz:
http://arxiv.org/abs/2003.06853
Autor:
Lu, Bing-Nan, Li, Ning, Elhatisari, Serdar, Lee, Dean, Drut, Joaquín E., Lähde, Timo A., Epelbaum, Evgeny, Meißner, Ulf-G.
Publikováno v:
Phys. Rev. Lett. 125, 192502 (2020)
We propose a new Monte Carlo method called the pinhole trace algorithm for {\it ab initio} calculations of the thermodynamics of nuclear systems. For typical simulations of interest, the computational speedup relative to conventional grand-canonical
Externí odkaz:
http://arxiv.org/abs/1912.05105