308 citations · 3.2k across the 96 of their papers we have counts for
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Non-Markovian expansion in quantum dissipative systems
E. S. Fraga, G. Krein, L. F. Palhares
We consider the non-Markovian Langevin evolution of a dissipative dynamical system in quantum mechanics in the path integral formalism. After discussing the role of the frequency c…
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…
Improved semiclassical density matrix: taming caustics
C. A. A. de Carvalho, R. M. Cavalcanti, E. S. Fraga +1
We present a simple method to deal with caustics in the semiclassical approximation to the thermal density matrix of a particle moving on the line. For simplicity, only its diagona…