Zobrazeno 1 - 10
of 3 534
pro vyhledávání: '"Condensate fraction"'
We investigate the formation of self-bound states in a one-dimensional dipolar Bose gas under the influence of both strong short-range repulsive and strong non-local attractive interactions. While conventional methods like the Bogoliubov de-Gennes (B
Externí odkaz:
http://arxiv.org/abs/2410.03513
Akademický článek
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Akademický článek
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Autor:
Simon, A., Wolschin, G.
Publikováno v:
Physica A 573, 125930 (2021)
We apply analytical solutions of a nonlinear boson diffusion equation (NBDE) that include boundary conditions at the singularity to calculate the time evolution of the entropy during evaporative cooling of ultracold atoms, and the time-dependent cond
Externí odkaz:
http://arxiv.org/abs/2103.07256
Publikováno v:
Phys. Rev. B 103, 094511 (2021)
We present an analytical method to estimate the condensate fraction $n_0/n$ in strongly correlated systems for which the zero-temperature static structure factor $S({\bf p})$ is known. The advantage of the proposed method is that it allows one to pre
Externí odkaz:
http://arxiv.org/abs/2007.16050
In a recent paper we studied an equation (called the "simple equation") introduced by one of us in 1963 for an approximate correlation function associated to the ground state of an interacting Bose gas. Solving the equation yields a relation between
Externí odkaz:
http://arxiv.org/abs/2010.13882
Publikováno v:
Phys. Rev. A 101, 063615 (2020)
The unitary Fermi gas is a many-body system of two-component fermions with zero-range interactions tuned to infinite scattering length. Despite much activity and interest in unitary Fermi gases and its universal properties, there have been great diff
Externí odkaz:
http://arxiv.org/abs/1910.01257
Publikováno v:
The European Physical Journal D 68, 262 (2014)
By using a correlated many body method and using the realistic van der Waals potential we study several statistical measures like the specific heat, transition temperature and the condensate fraction of the interacting Bose gas trapped in an anharmon
Externí odkaz:
http://arxiv.org/abs/1403.2717
Autor:
Salasnich, Luca
Publikováno v:
Phys. Rev. C 84, 067301 (2011)
We study the Bose-Einstein condensation of fermionic pairs in the uniform neutron matter by using the concept of the off-diagonal long-range order of the two-body density matrix of the system. We derive explicit formulas for the condensate density $\
Externí odkaz:
http://arxiv.org/abs/1112.4004
Autor:
Rota, Riccardo, Boronat, Jordi
We present results of the one-body density matrix (OBDM) and the condensate fraction n_0 of liquid 4He calculated at zero temperature by means of the Path Integral Ground State Monte Carlo method. This technique allows to generate a highly accurate a
Externí odkaz:
http://arxiv.org/abs/1109.6133