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quant-ph2022★ 8 cited
Analytical evaluation of the coefficients of the Hu-Paz-Zhang master equation: Ohmic spectral density, zero temperature, and consistency check
G. Homa, J. Z. Bernád, A. Csordás
We investigate the exact master equation of Hu, Paz, and Zhang for a quantum harmonic oscillator at zero temperature with a Lorentz-Drude type Ohmic spectral density. This master e…
quant-ph2022★ 3 cited
Newton's identities and positivity of trace class integral operators
G. Homa, R. Balka, J. Z. Bernád +2
We provide a countable set of conditions based on elementary symmetric polynomials that are necessary and sufficient for a trace class integral operator to be positive semidefinite…