2 papers
cond-mat.quant-gas2025
Sound Wave in the Backreaction Affected Spacetime in Analogue Gravity Based on Number-Conserving Approach
Sang-Shin Baak
It is shown that the sound wave in the backreaction affected dynamical spacetime follows the equations for a massive scalar field in a analogue spacetime using number-conserving ap…
physics.optics2024
Quantum backreaction effect in optical solitons
Sang-Shin Baak, Friedrich Koenig
Optical solitons classically are stationary solutions of the nonlinear Schrödinger equation. We perform a quantum field theoretic treatment by quantising a linearised fluctuation f…