Zobrazeno 1 - 10
of 787
pro vyhledávání: '"A Zaránd"'
We investigate the critical behavior of the Kondo compensation in the presence of a power-law pseudogap in the density of states, $\varrho(\omega)\sim |\omega|^\epsilon$. For $\epsilon<1$, this model exhibits a quantum phase transition from a partial
Externí odkaz:
http://arxiv.org/abs/2410.15422
Autor:
Valli, Angelo, Moca, Cătălin Paşcu, Werner, Miklós Antal, Kormos, Márton, Krajnik, Žiga, Prosen, Tomaž, Zaránd, Gergely
We propose a numerical method to efficiently compute quantum generating functions (QGF) for a wide class of observables in one-dimensional quantum systems at high temperature. We obtain high-accuracy estimates for the cumulants and reconstruct full c
Externí odkaz:
http://arxiv.org/abs/2409.14442
Autor:
Kürtössy, Olivér, Bodócs, Mihály, Moca, Cătălin Paşcu, Scherübl, Zoltán, Nikodem, Ella, Kanne, Thomas, Nygård, Jesper, Zaránd, Gergely, Makk, Péter, Csonka, Szabolcs
Topological superconductors (SCs) hold great promise for fault-tolerant quantum hardware, however, their experimental realization is very challenging. Recently, superconducting artificial molecules (Andreev molecules) have opened new avenues to engin
Externí odkaz:
http://arxiv.org/abs/2407.00825
Autor:
Penc, Patrik, Moca, Cătălin Paşcu, Legeza, Örs, Prosen, Tomaž, Zaránd, Gergely, Werner, Miklós Antal
Information propagation in the one-dimensional infinite temperature Hubbard model with a dissipative particle sink at the end of a semi-infinite chain is studied. In the strongly interacting limit, the two-site mutual information and the operator ent
Externí odkaz:
http://arxiv.org/abs/2402.19390
Publikováno v:
Phys. Lett. B 855, 138841 (2024)
The recently proposed combination of the valence-space in-medium similarity renormalization group (VS-IMSRG) with the density matrix renormalization group (DMRG) offers a scalable and flexible many-body approach for strongly correlated open-shell nuc
Externí odkaz:
http://arxiv.org/abs/2402.18723
Autor:
Szombathy, Dominik, Werner, Miklós Antal, Moca, Cătălin Paşcu, Legeza, Örs, Hamo, Assaf, Ilani, Shahal, Zaránd, Gergely
Publikováno v:
Phys. Rev. B 109, 245139 (2024)
The collective tunneling of a Wigner necklace - a crystal-like state of a small number of strongly interacting electrons confined to a suspended nanotube and subject to a double well potential - is theoretically analyzed and compared with experiments
Externí odkaz:
http://arxiv.org/abs/2306.15985
Publikováno v:
Phys. Rev. B 108, 235139 (2023)
We explore the Kardar-Parisi-Zhang (KPZ) scaling in the one-dimensional Hubbard model, which exhibits global $SU_c(2)\otimes SU_s(2)$ symmetry at half-filling, for the pseudo-charge and the total spin. We analyze dynamical scaling properties of high
Externí odkaz:
http://arxiv.org/abs/2306.11540
We construct the first complete exact numerical solution of a mean field quantum spin glass model, the transverse field Sherrington-Kirkpatrick model, by implementing a continuous-time quantum Monte Carlo method in the presence of full replica symmet
Externí odkaz:
http://arxiv.org/abs/2306.07337
Publikováno v:
Phys. Rev. B 107, 115111 (2023)
We study the dissipative dynamics of a one-dimensional bosonic system described in terms of the bipartite Bose-Hubbard model with alternating gain and loss. This model exhibits the $\mathcal{PT}$ symmetry under some specific conditions and features a
Externí odkaz:
http://arxiv.org/abs/2211.08707
Autor:
Ostahie, Bogdan, Sticlet, Doru, Moca, Cătălin Paşcu, Dóra, Balázs, Werner, Miklós Antal, Asbóth, János K., Zaránd, Gergely
Publikováno v:
Phys. Rev. B 108, 035126 (2023)
Recent experiments demonstrated that single-particle quantum walks can reveal the topological properties of single-particle states. Here, we generalize this picture to the many-body realm by focusing on multiparticle quantum walks of strongly interac
Externí odkaz:
http://arxiv.org/abs/2209.03569