Dynamics of interacting bosons in a double-well potential
نویسندگان
چکیده
منابع مشابه
Incommensurate superfluidity of bosons in a double-well optical lattice.
We study bosons in the first excited Bloch band of a double-well optical lattice, recently realized at NIST. By calculating the relevant parameters from a realistic nonseparable lattice potential, we find that in the most favorable cases, the boson lifetime in the first excited band can be several orders of magnitude longer than the typical nearest-neighbor tunneling time scales, in contrast wi...
متن کاملThermodynamic Properties of Bosons in Symmetric Double-well Potentials
We study the thermodynamic properties and the Bose-Einstein condensation (BEC) for a finite number N of identical non-interacting bosons in the field of a deep symmetric double-well potential (SDWP). The temperature dependence of the heat capacity C(T) at low temperatures is analyzed, and we derive several generic results which are valid when the energy difference between the first two excited ...
متن کاملAnomalous 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 کاملBosons in a disordered double-well potential: a simple system for understanding the interplay between disorder and interaction
Experiments on cold atoms in disordered potentials th a resonance slightly detuned erience a disordered potential ed to ensure that the statistical portional to the light intensity, xample of which is shown in nable us to precisely determine potentials. First, although the aussian random process, the Gaussian itself, and its single-runcated, exponential decaying (−V (r)/V R)Θ(V (r)/V R + 1), rd...
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 کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPL (Europhysics Letters)
سال: 2018
ISSN: 1286-4854
DOI: 10.1209/0295-5075/124/30002