WebThe described procedure provides a stable computational algorithm for solving AIM and gives us an access to the low frequency Green s function and the self energy of the … WebAug 18, 2024 · We have computed the self-energies in all the momentum tiles but we focus here on the self-energies corresponding to the tiles centred on the antinode points (π, 0)/(0, π), where the ...
Recent developments in the functional renormalization group …
The Bose–Hubbard model can be used to describe physical systems such as bosonic atoms in an optical lattice, as well as certain magnetic insulators. Furthermore, it can be generalized and applied to Bose–Fermi mixtures, in which case the corresponding Hamiltonian is called the … See more The Bose–Hubbard model gives a description of the physics of interacting spinless bosons on a lattice. It is closely related to the Hubbard model that originated in solid-state physics as an approximate … See more At zero temperature, the Bose–Hubbard model (in the absence of disorder) is in either a Mott insulating state at small $${\displaystyle t/U}$$, or in a superfluid state at large $${\displaystyle t/U}$$. The Mott insulating phases are characterized by integer boson … See more The Bose–Hubbard model is of interest in the field of quantum computation and quantum information. Entanglement of ultra-cold atoms can be studied using this model. See more The physics of this model is given by the Bose–Hubbard Hamiltonian: Here, $${\displaystyle \left\langle i,j\right\rangle }$$ denotes summation over all neighboring lattice sites $${\displaystyle i}$$ See more Ultracold atoms in optical lattices are considered a standard realization of the Bose–Hubbard model. The ability to tune model parameters … See more Quantum phase transitions in the Bose–Hubbard model were experimentally observed by Greiner et al., and density dependent … See more In the calculation of low energy states the term proportional to $${\displaystyle n^{2}U}$$ means that large occupation of a single site is improbable, allowing for truncation of local Hilbert space to states containing at most $${\displaystyle d<\infty }$$ particles. … See more http://dmrg101-tutorial.readthedocs.io/en/latest/hubbard.html electro world mlada boleslav
Phase diagram of the Bose-Hubbard Model. - Georgetown …
WebAug 23, 2024 · We study a simple model of interacting bosons on a d -dimensional cubic lattice whose dynamics conserves both total boson number and total boson dipole … WebNov 20, 1998 · The general case can be stated as a simple theorem: for a Hubbard model at half filling, a diagram with a loop consisting of n >1 particle lines is equal to (−1) n times … WebJan 1, 1992 · The superfluid characteristics of the attractive Hubbard model are analyzed for any coupling {vert_bar}{ital U}{vert_bar} and arbitrary electron concentration (0{lt}{ital … electroworld modřice