Zero-Temperature Equation of State of a Two-Dimensional Bosonic Quantum Fluid with Finite-Range Interaction

被引：7
|
作者：
Tononi, Andrea [1 ,2 ]
机构：
[1] Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Via Marzolo 8, I-35131 Padua, Italy
[2] Univ Padua, CNISM, Via Marzolo 8, I-35131 Padua, Italy
来源：
CONDENSED MATTER | 2019年 / 4卷 / 01期
关键词：
Bose-Einstein condensation; ultracold atoms; finite-range; equation of state; two-dimensional; BOSE-EINSTEIN CONDENSATION; HELIUM; GAS;
D O I：
10.3390/condmat4010020
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We derive the two-dimensional equation of state for a bosonic system of ultracold atoms interacting with a finite-range effective interaction. Within a functional integration approach, we employ a hydrodynamic parameterization of the bosonic field to calculate the superfluid equations of motion and the zero-temperature pressure. The ultraviolet divergences, naturally arising from the finite-range interaction, are regularized with an improved dimensional regularization technique.
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页码：1 / 11
页数：11
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