Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Sorin, Alexander"'
We study the decay of the false vacuum in the regime where the quantum field theory analysis is not valid, since gravitational effects become important. This happens when the height of the barrier separating the false and the true vacuum is large, an
Externí odkaz:
http://arxiv.org/abs/2407.11221
Sequence-to-Sequence Text-to-Speech architectures that directly generate low level acoustic features from phonetic sequences are known to produce natural and expressive speech when provided with adequate amounts of training data. Such systems can lea
Externí odkaz:
http://arxiv.org/abs/2207.12262
We identify an infinite class of unbounded potentials for which the Coleman instantons do not exist in D-dimensional spacetime. For such potentials, the decay of a false vacuum is described by the new instantons introduced in [5,6,4]. For each spacet
Externí odkaz:
http://arxiv.org/abs/2111.13928
We consider new instantons that appear as a result of accounting for quantum fluctuations. These fluctuations naturally regularize the O(4) singular solutions abandoned in Coleman's theory. In the previous works [3,4] we showed how new instantons mod
Externí odkaz:
http://arxiv.org/abs/2105.01996
We identify infinite classes of potentials for which the Coleman instantons do not exist. For these potentials, the decay of a false vacuum must be described by the new instantons introduced in [7,8].
Comment: 6 pages, LaTeX, 2 figures
Comment: 6 pages, LaTeX, 2 figures
Externí odkaz:
http://arxiv.org/abs/2104.12661
We study the fate of a false vacuum in the case of a potential that contains a portion which is quartic and unbounded. We first prove that an $O(4)$ invariant instanton with the Coleman boundary conditions does not exist in this case. This, however,
Externí odkaz:
http://arxiv.org/abs/2009.12444
We consider the decay of a false vacuum in circumstances where the methods suggested by Coleman run into difficulties. We find that in these cases quantum fluctuations play a crucial role. Namely, they naturally induce both an ultraviolet and infrare
Externí odkaz:
http://arxiv.org/abs/2009.12445
Publikováno v:
SIGMA 16 (2020), 115, 8 pages
In this short note we show that the Bruhat cells in real normal forms of semisimple Lie algebras enjoy the same property as their complex analogs: for any two elements $w$, $w'$ in the Weyl group $W(\mathfrak g)$, the corresponding real Bruhat cell $
Externí odkaz:
http://arxiv.org/abs/1810.09622
Publikováno v:
Phys. Rev. C 97, 041902 (2018)
We study the energy dependence of global polarization of $\Lambda$ hyperons in peripheral $Au-Au$ collisions. We combine the calculation of vorticity and strange chemical potential in the framework of kinetic Quark-Gluon String Model with the anomalo
Externí odkaz:
http://arxiv.org/abs/1701.00923
We associate with each simple Lie algebra a system of second-order differential equations invariant under a non-compact real form of the corresponding Lie group. In the limit of a contraction to a Schr\"odinger algebra, these equations reduce to a sy
Externí odkaz:
http://arxiv.org/abs/1612.07832