Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Nersesyan, Alexander"'
Autor:
Beradze, Bachana, Tsitsishvili, Mikheil, Tirrito, Emanuele, Dalmonte, Marcello, Chanda, Titas, Nersesyan, Alexander
Publikováno v:
Phys. Rev. B 108, 075146 (2023)
We consider a system of interacting spinless fermions on a two-leg triangular ladder with $\pi/2$ magnetic flux per triangular plaquette. Microscopically, the system exhibits a U(1) symmetry corresponding to the conservation of total fermionic charge
Externí odkaz:
http://arxiv.org/abs/2305.06911
Autor:
Beradze, Bachana, Nersesyan, Alexander
Ultracold Fermi gases with synthetic gauge field represent an excellent platform to study the combined effect of lattice frustration and an effective magnetic flux close to one flux quantum per particle. The minimal theoretical model to accomplish th
Externí odkaz:
http://arxiv.org/abs/2210.16814
Autor:
Fromholz, Pierre, Tsitsishvili, Mikheil, Votto, Matteo, Dalmonte, Marcello, Nersesyan, Alexander, Chanda, Titas
Publikováno v:
Phys. Rev. B 106, 155411 (2022)
Dressed Rydberg atoms in optical lattices are a promising platform for the quantum simulation of intriguing phenomena emerging in strongly interacting systems. Relevant to such a setup, we investigate the phase diagram of hard-core bosons in a triang
Externí odkaz:
http://arxiv.org/abs/2207.00385
Autor:
Tsitsishvili, Mikheil, Chanda, Titas, Votto, Matteo, Fromholz, Pierre, Dalmonte, Marcello, Nersesyan, Alexander
Publikováno v:
Phys. Rev. B 105, 155159 (2022)
We investigate the phase diagram of hard-core bosons in two-leg ladders in the presence of soft-shoulder potentials. We show how the competition between local and non-local terms gives rise to a phase diagram with liquid phases with dominant cluster,
Externí odkaz:
http://arxiv.org/abs/2112.10421
We study the response of classical impurities in quantum Ising chains. The Z2 degeneracy they entail renders the existence of two decoupled Majorana modes at zero energy an exact property of a finite system at arbitrary values of its bulk parameters.
Externí odkaz:
http://arxiv.org/abs/1603.01037
Autor:
Beradze, Bachana1,2 (AUTHOR), Nersesyan, Alexander1,2,3 (AUTHOR) alex.a.nersesyan@gmail.com
Publikováno v:
European Physical Journal B: Condensed Matter. Jan2023, Vol. 96 Issue 1, p1-13. 13p.
Publikováno v:
Annals of Physics, 339, 22-80 (2013)
We study the effect of external potential on transport properties of the fermionic two-leg ladder model. The response of the system to a local perturbation is strongly dependent on the ground state properties of the system and especially on the domin
Externí odkaz:
http://arxiv.org/abs/1306.3382
Publikováno v:
Phys. Rev. B83: 205132,2011
Motivated by recent experiments on quasi-1D vanadium oxides, we study quantum phase transitions in a one-dimensional spin-orbital model describing a Haldane chain and a classical Ising chain locally coupled by the relativistic spin-orbit interaction.
Externí odkaz:
http://arxiv.org/abs/1101.1268
Publikováno v:
Phys. Rev. Lett. 106, 126805 (2011)
We study the effect of a local external potential on a system of two parallel spin-polarized nanowires placed close to each other. For single channel nanowires with repulsive interaction we find that transport properties of the system are highly sens
Externí odkaz:
http://arxiv.org/abs/1008.5282
Publikováno v:
Phys. Rev. B 76, 245121 (2007)
We derive a low-energy effective model of metallic zigzag carbon nanotubes at half filling. We show that there are three important features characterizing the low-energy properties of these systems: the long-range Coulomb interaction, umklapp scatter
Externí odkaz:
http://arxiv.org/abs/0707.3784