Zobrazeno 1 - 10
of 1 136
pro vyhledávání: '"Llano, M"'
A detailed analysis is given of the effects of common and recurring approximations used in conventional superconductivity theories on the condensation energy values, whose magnitudes are notoriously smaller than those of other energies as the superco
Externí odkaz:
http://arxiv.org/abs/2206.05342
Influence of the temperature dependent chemical potential on the condensation energy from a ternary Boson-Fermion model of superconductivity is reported, it consist of unbound electrons/holes which are fermions plus two-electron and two-hole Cooper p
Externí odkaz:
http://arxiv.org/abs/2202.11232
Publikováno v:
JETP Lett. 101, 376 (2015)
We discuss a possible origin of the experimentally observed nonlinear contribution to the shift $\Delta T_{c}=T_c-T_{c}^{0}$ of the critical temperature $T_{c}$ in an atomic Bose-Einstein condensate (BEC) with respect to the critical temperature $T_{
Externí odkaz:
http://arxiv.org/abs/1502.00933
Publikováno v:
Pis'ma v ZhETF, vol. 101, iss. 8, pp. 631- 636 (2015)
The shift in condensation temperature caused by interactions is studied up to second order in the s-wave scattering length in a Bose-Einstein condensate trapped in a temperature-dependent three-dimensional generic potential. With no assumptions other
Externí odkaz:
http://arxiv.org/abs/1404.3255
Publikováno v:
Physics Letters A 376 (2012), pp. 2911-2916
A relativistic complex scalar boson field at finite temperature $T$ is examined below its critical Bose-Einstein condensation temperature. It is shown that at the same $T$ the state with antibosons has higher entropy, lower Helmholtz free energy and
Externí odkaz:
http://arxiv.org/abs/1208.4492
Publikováno v:
EPL 98 (2012) 60001
The effects of a Planck-scale deformation of the Minkowski energy-momentum dispersion relation on the phenomenology of non-trapped Bose-Einstein condensates (BECs) are examined. Such a deformation is shown to cause a shift in the condensation tempera
Externí odkaz:
http://arxiv.org/abs/1204.4670
We study electron pairing in a one-dimensional (1D) fermion gas at zero temperature under zero- and finite-range, attractive, two-body interactions. The binding energy of Cooper pairs (CPs) with zero total or center-of-mass momentum (CMM) increases w
Externí odkaz:
http://arxiv.org/abs/1008.2970
We obtain the thermodynamic properties for a non-interacting Bose gas constrained on multilayers modeled by a periodic Kronig-Penney delta potential in one direction and allowed to be free in the other two directions. We report Bose-Einstein condensa
Externí odkaz:
http://arxiv.org/abs/1007.1458
Autor:
Villarreal, C., de Llano, M.
High-Tc superconductivity in layered cuprates is described in a BCS-BEC formalism with linearly-dispersive s- and d-wave Cooper pairs moving in quasi-2D finite-width layers about the CuO_2 planes. This yields a closed formula for Tc determined by the
Externí odkaz:
http://arxiv.org/abs/1001.0957
Autor:
Villarreal, C., de Llano, M.
We calculate the number and energy densities of a quasi-2D Bose-Einstein gas constrained within a thin region of infinite extent but of finite width d. The BEC critical transition temperature then becomes an explicit function of d. We use this result
Externí odkaz:
http://arxiv.org/abs/0912.1563