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Showing 1 to 6 of 6 for “"Vacuum decay"”.
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Topics in vacuum decay
If a theory has more than one classically stable vacuum, quantum tunneling and thermal jumps make the transition between the vacua possible. The transition happens through a first order phase transition started by nucleation of a bubble of the new vacuum. The outward pressure of the truer vacuum …
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Numerical calculations of the decay rate of a false vacuum for a modified quartic potential
The possibility of two or more vacuum states with different energy densities is a common feature of many potentials. The classical state is in stable equilibrium at any of these minima but is made unstable by quantum effects. The formalism that describes transitions from a false (higher energy …
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Probes of cosmic inflation: from the CMB to quantum analogues
… of the thesis investigates the dynamics of false vacuum decay (FVD), a first-order phase transition at the heart of the eternal inflation paradigm. In Chapter 4, we use semiclassical lattice simulations to model the phenomenon in real time and extract ensemble-averaged bubble profiles at the time …
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Topics in Type IIB Kähler Moduli Stabilisation
… potential. The implementation features rigorous vacuum validation protocols derived from analytic results. We apply our methods to explicit flux compactifications on more than 80,000 Calabi-Yau threefolds with h1,1 ≤ 6 Kähler moduli. By systematically scanning over a wide range of values of the …
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Impatto di Nuova Fisica oltre il Modello Standard sulla stabilità del vuoto elettrodebole
Le nostre attuali conoscenze sulla fisica delle particelle, soprattutto a seguito della scoperta del bosone di Higgs, ci dicono che il nostro Universo non si trova nel suo stato più stabile, ovvero il suo stato fondamentale. Poiché in Natura tutto tende a raggiungere tale stato, l’Universo è …
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Simulation of curved-space quantum field theories with two-component Bose-Einstein condensates: from black-hole physics to cosmology
… we then proceed to tackle a problem (the decay from the false vacuum) which instead requires the additional degrees of freedom that only a mixture displays.