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pro vyhledávání: '"Dynamical instability"'
Autor:
Alaña, Aitor
Supersolids are a phase of matter exhibiting both superfluidity and a periodic density modulation typical of crystals. When formed via quantum phase transition from a superfluid, they require a formation time before their density pattern develops. Al
Externí odkaz:
http://arxiv.org/abs/2309.17098
Publikováno v:
Annals of Physics (2023)
A modification to the Heisenberg uncertainty principle is called the generalized uncertainty principle (GUP), which emerged due to the introduction of a minimum measurable length, common among phenomenological approaches to quantum gravity. One appro
Externí odkaz:
http://arxiv.org/abs/2210.09876
Closely-packed multi-planet systems are known to experience dynamical instability if the spacings between the planets are too small. Such instability can be tempered by the frictional forces acting on the planets from gaseous discs. A similar situati
Externí odkaz:
http://arxiv.org/abs/2206.01755
Akademický článek
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Here we revisit the topic of stationary and propagating solitonic excitations in self-repulsive three-dimensional Bose-Einstein condensates by quantitatively comparing theoretical analysis and associated numerical computations with our experimental r
Externí odkaz:
http://arxiv.org/abs/2208.08151
Publikováno v:
Phys. Rev. Lett. 130, 011402 (2023)
We show that a generic relativistic membrane with in-plane pressure and surface density having the same sign is unstable with respect to a series of warping mode instabilities with high wave numbers. We also examine the criteria of instability for co
Externí odkaz:
http://arxiv.org/abs/2207.13754
Autor:
Okuma, Nobuyuki
The energy spectrum of bosonic excitations from a condensate is given by the spectrum of a non-Hermitian Hamiltonian constructed from a bosonic Bogoliubov-de Gennes (BdG) Hamiltonian in general even though the system is essentially Hermitian. In othe
Externí odkaz:
http://arxiv.org/abs/2202.07684
Publikováno v:
In Annals of Physics October 2023 457
Publikováno v:
JCAP 05 (2022) 036
A self-interacting dark matter halo can experience gravothermal collapse, resulting in a central core with an ultrahigh density. It can further contract and collapse into a black hole, a mechanism proposed to explain the origin of supermassive black
Externí odkaz:
http://arxiv.org/abs/2108.11967
Triple-star systems exhibit a phenomenon known as the Triple Evolution Dynamical Instability (TEDI), in which mass loss in evolving triples triggers short-term dynamical instabilities, potentially leading to collisions of stars, exchanges, and ejecti
Externí odkaz:
http://arxiv.org/abs/2107.13620