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Detecting gravitational waves from cosmological phase transitions with LISA: an update
Chiara Caprini, Mikael Chala, Glauber C. Dorsch +11
We investigate the potential for observing gravitational waves from cosmological phase transitions with LISA in light of recent theoretical and experimental developments. Our analy…
Quantum tunnelling, real-time dynamics and Picard-Lefschetz thimbles
Zong-Gang Mou, Paul M. Saffin, Anders Tranberg
We follow up the work, where in light of the Picard-Lefschetz thimble approach, we split up the real-time path integral into two parts: the initial density matrix part which can be…
Real-time quantum dynamics, path integrals and the method of thimbles
Zong-Gang Mou, Paul M. Saffin, Anders Tranberg +1
Direct numerical evaluation of the real-time path integral has a well-known sign problem that makes convergence exponentially slow. One promising remedy is to use Picard-Lefschetz…