منابع مشابه
Anomalous jumping in a double-well potential.
Noise-induced jumping between metastable states in a potential depends on the structure of the noise. For an alpha-stable noise, jumping triggered by single extreme events contributes to the transition probability. This is also called Levy flights and might be of importance in triggering sudden changes in geophysical flow and perhaps even climatic changes. The steady-state statistics is also in...
متن کاملThreshold resonances in a double well system
It is shown that the resonance reported by Szmytkowski and Szmytkowski [Phys. Lett. A 235 (1997) 217] is not a proximity resonance as defined by Heller [Phys. Rev. Lett. 77 (1996) 4122]. Rather, it can be related to a threshold resonance connected to the antisymmetric bound state of the two wells, which enters the continuum when the wells are one scattering length apart. In addition, a surprisi...
متن کاملNew instantons in the double - well potential
A new instanton solution is found in the quantum-mechanical double-well potential with a four-fermion term. The solution has finite action, S = −m3 3λ − ( mA 4 √ 2λ + g 261m 8960 ) ǫξiξjξkξl, where A is a bosonic collective coordinate, ξi, i = 1, ..., 4 are fermionic collective coordinates and g,m and λ are coupling constants. We explain why in general the instanton action can depend on collect...
متن کاملBose – Einstein condensation in a magnetic double - well potential
We present the first experimental realization of Bose–Einstein condensation in a purely magnetic double-well potential. This has been achieved by combining a static Ioffe–Pritchard trap with a time orbiting potential. The double trap can be rapidly switched to a single-harmonic trap of identical oscillation frequencies, thus accelerating the two condensates towards each other. Furthermore, we s...
متن کاملEquilibration and nonclassicality of a double-well potential
A double well loaded with bosonic atoms represents an ideal candidate to simulate some of the most interesting aspects in the phenomenology of thermalisation and equilibration. Here we report an exhaustive analysis of the dynamics and steady state properties of such a system locally in contact with different temperature reservoirs. We show that thermalisation only occurs 'accidentally'. We furt...
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ژورنال
عنوان ژورنال: Analysis & PDE
سال: 2016
ISSN: 1948-206X,2157-5045
DOI: 10.2140/apde.2016.9.1737