35 citations · 153 across the 10 of their papers we have counts for
27 papers
Quantum Behavior of Deterministic Systems with Information Loss. Path Integral Approach
M. Blasone, P. Jizba, H. Kleinert
't Hooft's derivation of quantum from classical physics is analyzed by means of the classical path integral of Gozzi et al.. It is shown how the key element of this procedure - the…
Thermally induced rotons in two-dimensional dilute Bose gases
Flavio S. Nogueira, Hagen Kleinert
We show that roton-like excitations are thermally induced in a two-dimensional dilute Bose gas as a consequence of the strong phase fluctuations in two dimensions. At low momentum,…
Geometric model of dark energy
V. Folomeev, V. Gurovich, H. Kleinert
A cosmological model with a gravitational Lagrangian is set up to account for the presently observed re-acceleration of the universe. The evolution equation…
Quantum electrodynamics in 2+1 dimensions, confinement, and the stability of U(1) spin liquids
Flavio S. Nogueira, Hagen Kleinert
Compact quantum electrodynamics in 2+1 dimensions often arises as an effective theory for a Mott insulator, with the Dirac fermions representing the low-energy spinons. An importan…
Path Integral Approach to 't Hooft's Derivation of Quantum from Classical Physics
Massimo Blasone, Petr Jizba, Hagen Kleinert
We present a path-integral formulation of 't Hooft's derivation of quantum from classical physics. The crucial ingredient of this formulation is Gozzi et al.'s supersymmetric path…
Highly Accurate Critical Exponents from Self-Similar Variational Perturbation Theory
H. Kleinert, V. I. Yukalov
We extend field theoretic variational perturbation theory by self-similar approximation theory, which greatly accelerates convergence. This is illustrated by re-calculating the cri…