Finite-size, magnetic and chemical-potential effects on first-order phase transitions

2013/05/29 by E. B. S. Corrêa, Corrêa, E. B. S., C. A. Linhares +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech #hep-th

paper · pdf · doi:10.48550/arxiv.1305.6850

19 pages, 3 figures, version accepted for publication in Phys. Lett. A

arxiv created 2013/05/29 · arxiv updated 2013/05/31

Abstract

We perform a study about effects of an applied magnetic field and a finite chemical potential on the size-dependent phase structure of a first-order transition. These effects are introduced by using methods of quantum fields defined on toroidal spaces, and we study in particular the case of two compactified dimensions, imaginary time and a spatial one (a heated film). It is found that for any value of the applied field, there is a minimal size of the system, independent of the chemical potential, below which the transition disappears.

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