2 papers
quant-ph2026
A nonrecursive method for computing the off-diagonal small-time heat kernel expansion
Vyacheslav O. Guba, Alexey V. Reznichenko
We present a nonrecursive method to compute the small-time heat kernel asymptotic expansion. The Klein-Gordon operator in flat space-time coupled to electromagnetic fields is consi…
cs.IT2023
Path-integral approach to mutual information calculation for nonlinear communication channel with small second dispersion at large signal-to-noise power ratio
A. V. Reznichenko, V. O. Guba
We consider the information fiber optical channel modeled by the nonlinear Schrodinger equation with additive Gaussian noise. Using path-integral approach and perturbation theory f…