Pairing and Pair Superfluid Density in One-Dimensional Two-Species Fermionic and Bosonic Hubbard Models

Autor: Benoît Grémaud, G. George Batrouni

Publikováno v: Physical Review Letters. 127

We use unbiased computational methods to elucidate the onset and properties of pair superfluidity in two-species fermionic and bosonic systems with onsite interspecies attraction loaded in a uniform, i.e., with no confining potential, one-dimensional

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2c317ed200c6fd39c3da65b5da3f5f7
https://doi.org/10.1103/physrevlett.127.025301

Langevin simulations of the half-filled cubic Holstein model

Autor: Richard T. Scalettar, Benjamin Cohen-Stead, G. George Batrouni, Zi Yang Meng, Kipton Barros, Chuang Chen

Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2020, 102 (16), ⟨10.1103/PhysRevB.102.161108⟩

Over the past several years, reliable quantum Monte Carlo results for the charge density wave transition temperature ${T}_{\mathrm{cdw}}$ of the half-filled two-dimensional Holstein model in square and honeycomb lattices have become available for the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37f53471e1ff7992113b8161000051a6
https://doi.org/10.1103/physrevb.102.161108

Two-photon Rabi-Hubbard and Jaynes-Cummings-Hubbard models: Photon-pair superradiance, Mott insulator, and normal phases

Autor: Frederic Hebert, Shifeng Cui, G. George Batrouni, Benoît Grémaud, Wenan Guo, Valery Rousseau

Publikováno v: Physical Review A
Physical Review A, American Physical Society 2019, 100 (3), pp.033608. ⟨10.1103/PhysRevA.100.033608⟩
Physical Review A, American Physical Society 2019, 100 (3), ⟨10.1103/PhysRevA.100.033608⟩
Physical Review A, 2019, 100 (3), pp.033608. ⟨10.1103/PhysRevA.100.033608⟩

We study the ground state phase diagrams of two-photon Dicke, the one-dimensional Jaynes-Cummings-Hubbard (JCH), and Rabi-Hubbard (RH) models using mean field, perturbation, quantum Monte Carlo (QMC), and density matrix renormalization group (DMRG) m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65154291da09b735e7439e506318bf2a
https://hal.archives-ouvertes.fr/hal-02400002

One-dimensional Hubbard-Holstein model with finite-range electron-phonon coupling

Autor: Frederic Hebert, Richard T. Scalettar, Valery Rousseau, G. George Batrouni, Bo Xiao

Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2019, 99 (7), ⟨10.1103/PhysRevB.99.075108⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2019, 99 (7), ⟨10.1103/PhysRevB.99.075108⟩

The Hubbard-Holstein model describes fermions on a discrete lattice, with on-site repulsion between fermions and a coupling to phonons that are localized on sites. Generally, at half-filling, increasing the coupling $g$ to the phonons drives the syst

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb4408e7a60201ccd0c3f0bf91e702b8
https://hal.archives-ouvertes.fr/hal-03261755

Haldane phase on the sawtooth lattice: Edge states, entanglement spectrum, and the flat band

Autor: G. George Batrouni, Benoît Grémaud

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 95 (16), pp.165131. ⟨10.1103/PhysRevB.95.165131⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2017, 95 (16), pp.165131. ⟨10.1103/PhysRevB.95.165131⟩

Using density matrix renormalization group numerical calculations, we study the phase diagram of the half filled Bose-Hubbard system in the sawtooth lattice with strong frustration in the kinetic energy term. We focus in particular on values of the h

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f6141a1c9430efe4844acaa5eacee20
https://hal.sorbonne-universite.fr/hal-01526867