308 citations · 3.2k across the 96 of their papers we have counts for
10 papers · 1 filter
Zero-mode analysis of quantum statistical physics
A. Bessa, C. A. A. de Carvalho, E. S. Fraga
We present a unified formulation for quantum statistical physics based on the representation of the density matrix as a functional integral. We identify the stochastic variable of…
Phase conversion in a weakly first-order quark-hadron transition
A. Bessa, E. S. Fraga, B. W. Mintz
We investigate the process of phase conversion in a thermally-driven {\it weakly} first-order quark-hadron transition. This scenario is physically appealing even if the nature of t…
CP violation and chiral symmetry restoration in the hot linear sigma model in a strong magnetic background
Ana Júlia Mizher, Eduardo S. Fraga
We study the effects of CP violation on the nature of the chiral transition within the linear sigma model with two flavors of quarks. The finite-temperature effective potential con…
CP Violation in the Linear Sigma Model
Ana Júlia Mizher, Eduardo S. Fraga
Motivated by the possibility of the formation of CP-odd domains in heavy ion collisions, we investigate the effects of CP violation on the chiral transition within the linear sigma…
Can a strong magnetic background modify the nature of the chiral transition in QCD?
Eduardo S. Fraga, Ana Júlia Mizher
The presence of a strong magnetic background can modify the nature and the dynamics of the chiral phase transition at finite temperature: for high enough magnetic fields, comparabl…
On the nucleation of hadronic domains in the quark-hadron transition
B. W. Mintz, A. Bessa, E. S. Fraga
We present numerical results on bubble profiles, nucleation rates and time evolution for a weakly first-order quark-hadron phase transition in different expansion scenarios. We con…
Mass and chemical asymmetry in QCD matter
L. F. Palhares, E. S. Fraga, C. Villavicencio
We consider two-flavor asymmetric QCD combined with a low-energy effective model inspired by chiral perturbation theory and lattice data to investigate the effects of masses, isosp…
Semiclassical calculation of decay rates
A. Bessa, C. A. A. de Carvalho, E. S. Fraga
Several relevant aspects of quantum-field processes can be well described by semiclassical methods. In particular, the knowledge of non-trivial classical solutions of the field equ…
Chiral transition in a strong magnetic background
Eduardo S. Fraga, Ana Júlia Mizher
The presence of a strong magnetic background can modify the nature and the dynamics of the chiral phase transition at finite temperature. We compute the modified effective potentia…
Perturbative Yukawa theory at finite density: the role of masses and renormalization group flow at two loops
Letícia F. Palhares, Eduardo S. Fraga
Yukawa theory at vanishing temperature provides (one of the ingredients for) an effective description of the thermodynamics of a variety of cold and dense fermionic systems. We stu…