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171 papers · 1 filter
The role of damping for the driven anharmonic quantum oscillator
Lingzhen Guo, Michael Marthaler, Stephan André +1
For the model of a linearly driven quantum anharmonic oscillator, the role of damping is investigated. We compare the position of the stable points in phase space obtained from a c…
Clustering experiments
Zhengwei Wang, Lei Wang, Ken Tan +2
It is well known that bees cluster together in cold weather, in the process of swarming (when the ``old'' queen leaves with part of the colony) or absconding (when the queen leaves…
Fermionic superfluidity and spontaneous superflows in optical lattices
Shi-Jie Yang, Shiping Feng
We study superfluidity of strongly repulsive fermionic atoms in optical lattices. The atoms are paired up through a correlated tunneling mechanism, which induces superfluidity when…
Dynamical revival of phase coherence in a many-boson system
Shi-Jie Yang, Sumin Nie
We study the quantum dynamics of cold Bose atoms in a double well. It is shown that self-trapping, as well as population oscillations are common phenomena associated to nonlinear i…
On the exterior Dirichlet problem for Hessian equations
Jiguang Bao, Haigang Li, Yanyan Li
In this paper, we establish a theorem on the existence of the solutions of the exterior Dirichlet problem for Hessian equations with prescribed asymptotic behavior at infinity. Thi…
Extension of Loop Quantum Gravity to Metric Theories beyond General Relativity
Yongge Ma
The successful background-independent quantization of Loop Quantum Gravity relies on the key observation that classical General Relativity can be cast into the connection-dynamical…