513 citations · 4.4k across the 106 of their papers we have counts for
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Thermodynamics of the O(N) Nonlinear Sigma Model in 1+1 Dimensions
Jens O. Andersen, Daniel Boer, Harmen J. Warringa
The thermodynamics of the O(N) nonlinear sigma model in 1+1 dimensions is studied. We calculate the pressure to next-to-leading order in the 1/N expansion and show that at this ord…
Theory of the Weakly Interacting Bose Gas
Jens O Andersen
We review recent advances in the theory of the three-dimensional dilute homogeneous Bose gas at zero and finite temperature. Effective field theory methods are used to formulate a…
Dimensional and Temperature Crossover in Trapped Bose Gases
U. Al Khawaja, N. P. Proukakis, J. O. Andersen +2
We investigate the long-range phase coherence of homogeneous and trapped Bose gases as a function of the geometry of the trap, the temperature, and the mean-field interactions in t…
Two-loop HTL Thermodynamics with Quarks
Jens O. Andersen, Emmanuel Petitgirard, Michael Strickland
We calculate the quark contribution to the free energy of a hot quark-gluon plasma to two-loop order using hard-thermal-loop (HTL) perturbation theory. All ultraviolet divergences…