Zobrazeno 1 - 10
of 445
pro vyhledávání: '"Parola, Alberto"'
Autor:
Viteritti, Luciano Loris, Rende, Riccardo, Parola, Alberto, Goldt, Sebastian, Becca, Federico
Quantum magnetism in two-dimensional systems represents a lively branch of modern condensed-matter physics. In the presence of competing super-exchange couplings, magnetic order is frustrated and can be suppressed down to zero temperature, leading to
Externí odkaz:
http://arxiv.org/abs/2311.16889
Autor:
Piccioni, Davide, Apostoli, Christian, Becca, Federico, Mazzola, Guglielmo, Parola, Alberto, Sorella, Sandro, Santoro, Giuseppe E.
Publikováno v:
Phys. Rev. B 108, 104417 (2023)
We show that a two-body Jastrow wave function is able to capture the ground-state properties of the $S=1$ antiferromagnetic Heisenberg chain with the single-ion anisotropy term, in both the topological and trivial phases. Here, the optimized Jastrow
Externí odkaz:
http://arxiv.org/abs/2305.14162
Autor:
Hansen, Lasse, Rocca, Roberta, Simonsen, Arndis, Parola, Alberto, Bliksted, Vibeke, Ladegaard, Nicolai, Bang, Dan, Tylén, Kristian, Weed, Ethan, Østergaard, Søren Dinesen, Fusaroli, Riccardo
Speech patterns have been identified as potential diagnostic markers for neuropsychiatric conditions. However, most studies only compare a single clinical group to healthy controls, whereas clinical practice often requires differentiating between mul
Externí odkaz:
http://arxiv.org/abs/2301.06916
Thermal forces drive several nonequilibrium phenomena able to set a fluid in motion without pressure gradients. Although the most celebrated effect is thermophoresis, also known as Ludwig-Soret effect, probably the simplest example where thermal forc
Externí odkaz:
http://arxiv.org/abs/2203.06987
Publikováno v:
Phys. Rev. B 106, L161106 (2022)
Taking the clue from the modern theory of polarization [R. Resta, Rev. Mod. Phys. {\bf 66}, 899 (1994)], we identify an operator to distinguish between ${\mathbb Z}_2$-even (trivial) and ${\mathbb Z}_2$-odd (topological) insulators in two spatial dim
Externí odkaz:
http://arxiv.org/abs/2202.12207
Autor:
Tettamanti, Manuele, Parola, Alberto
Publikováno v:
Phys. Rev. A 104, 043325 (2021)
The existence and stability of solitonic states in one-dimensional repulsive Bose-Einstein condensates is investigated within a fully many-body framework by considering the limit of infinite repulsion (Tonks-Girardeau gas). A class of stationary, sha
Externí odkaz:
http://arxiv.org/abs/2110.15140
Autor:
Iqbal, Yasir, Ferrari, Francesco, Chauhan, Aishwarya, Parola, Alberto, Poilblanc, Didier, Becca, Federico
Publikováno v:
Phys. Rev. B 104, 144406 (2021)
We assess the ground-state phase diagram of the $J_1$-$J_2$ Heisenberg model on the kagome lattice by employing Gutzwiller-projected fermionic wave functions. Within this framework, different states can be represented, defined by distinct unprojected
Externí odkaz:
http://arxiv.org/abs/2108.02847
Publikováno v:
Phys. Rev. B 103, 195140 (2021)
We show that gapless spin liquids, which are potential candidates to describe the ground state of frustrated Heisenberg models in two dimensions, become trivial insulators on cylindrical geometries with an even number of legs. In particular, we repor
Externí odkaz:
http://arxiv.org/abs/2103.05662
Publikováno v:
EPL 133 20002 (2021)
We provide a joint numerical-analytical study of the physics of a flowing atomic Bose-Einstein condensate in the combined presence of an external trap and a step potential which accelerates the atoms out of the condensate creating a pair of neighbour
Externí odkaz:
http://arxiv.org/abs/2010.07613
Autor:
Tettamanti, Manuele, Parola, Alberto
Publikováno v:
Universe 6(8), 105 (2020)
We investigate the formation dynamics of sonic horizons in a Bose gas confined in a (quasi) one-dimensional trap. This system is one of the most promising realizations of the analogue gravity paradigm and has already been successfully studied experim
Externí odkaz:
http://arxiv.org/abs/2007.02389