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quant-ph2001
Langevin Equation for Particle in Thermal Photon Bath
Z. Haba, H. Kleinert
The forward--backward path integral describing a charged particle moving in a thermal bath of photons is expressed in terms of the solution of a Langevin-type of equation. Approxim…
quant-ph2000
Quantum propagators in a random metric
Z. Brzezniak, Z. Haba
We consider second order differential operators with coefficients which are Gaussian random fields. When the covariance becomes singular at short distances then the propagators of…