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Quantum Field Theory for the Three-Body Constrained Lattice Bose Gas -- Part II: Application to the Many-Body Problem
S. Diehl, M. Baranov, A. J. Daley +1
We analyze the ground state phase diagram of attractive lattice bosons, which are stabilized by a three-body onsite hardcore constraint. A salient feature of this model is an Ising…
Quantum Field Theory for the Three-Body Constrained Lattice Bose Gas -- Part I: Formal Developments
S. Diehl, M. Baranov, A. J. Daley +1
We develop a quantum field theoretical framework to analytically study the three-body constrained Bose-Hubbard model beyond mean field and non-interacting spin wave approximations.…
An atomic colour superfluid via three-body loss
A. Kantian, M. Dalmonte, S. Diehl +3
Large three-body losses in a three-component Fermi gas confined in an optical lattice can prevent the occupation of a lattice site by three atoms. This effective constraint not onl…
Functional renormalization group approach to the BCS-BEC crossover
S. Diehl, S. Floerchinger, H. Gies +2
The phase transition to superfluidity and the BCS-BEC crossover for an ultracold gas of fermionic atoms is discussed within a functional renormalization group approach. Non-perturb…
Stabilization of the p-wave superfluid state in an optical lattice
Y. -J. Han, Y. -H. Chan, W. Yi +4
It is hard to stabilize the p-wave superfluid state of cold atomic gas in free space due to inelastic collisional losses. We consider the p-wave Feshbach resonance in an optical la…