False vacuum decay rate from thin to thick walls
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep04(2025)120
Abstract: We consider a single real scalar field in flat spacetime with a polynomial potential up to ϕ4, that has a local minimum, the false vacuum, and a deeper global minimum, the true vacuum. When the… read more here.
Keywords: vacuum; wall; decay rate; false vacuum ... See more keywords
False vacuum decay of excited states in finite-time instanton calculus
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep05(2025)076
Abstract: Extracting information about a system’s metastable ground state energy employing functional methods usually hinges on utilizing the late-time behavior of the Euclidean propagator, practically impeding the possibility of determining decay widths of excited states. We… read more here.
Keywords: instanton; finite time; time; excited states ... See more keywords
Functional methods for false-vacuum decay in real time
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep12(2019)095
Abstract: Abstract We present the calculation of the Feynman path integral in real time for tunneling in quantum mechanics and field theory, including the first quantum corrections. For this purpose, we use the well-known fact that… read more here.
Keywords: time; path integral; real time; functional methods ... See more keywords
Stirring the false vacuum via interacting quantized bubbles on a 5,564-qubit quantum annealer
Sign Up to like & getrecommendations! Published in 2024 at "Nature Physics"
DOI: 10.1038/s41567-024-02765-w
Abstract: False vacuum decay—the transition from a metastable quantum state to a true vacuum state—plays an important role in quantum field theory and non-equilibrium phenomena such as phase transitions and dynamical metastability. The non-perturbative nature of… read more here.
Keywords: qubit; vacuum; vacuum decay; quantum annealer ... See more keywords
False vacuum decay in quantum spin chains
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.l201106
Abstract: Gianluca Lagnese, 2 Federica Maria Surace, 3 Márton Kormos, 5 and Pasquale Calabrese 2, 3 SISSA, via Bonomea 265, 34136 Trieste, Italy INFN, Sezione di Trieste, 34136 Trieste, Italy International Centre for Theoretical Physics (ICTP),… read more here.
Keywords: physics; trieste; economics; trieste italy ... See more keywords
Mass renormalization in lattice simulations of false vacuum decay
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.083509
Abstract: False vacuum decay, a quantum mechanical first-order phase transition in scalar field theories, is an important phenomenon in early universe cosmology. Recently, real-time semi-classical techniques based on ensembles of lattice simulations were applied to the… read more here.
Keywords: vacuum; false vacuum; vacuum decay; lattice simulations ... See more keywords
Piecewise linear potentials for false vacuum decay and negative modes
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.110.065021
Abstract: We study bounce solutions and associated negative modes in the class of piecewise linear triangular-shaped potentials that may be viewed as approximations of smooth potentials. In these simple potentials, the bounce solution and action can… read more here.
Keywords: piecewise linear; linear potentials; negative modes; vacuum decay ... See more keywords