@article{MTMT:34568147,
	title = {Complete replica solution for the transverse field Sherrington-Kirkpatrick spin glass model with continuous-time quantum Monte Carlo method},
	url = {https://m2.mtmt.hu/api/publication/34568147},
	author = {Kiss, Annamária and Zaránd, Gergely Attila and Lovas, I.},
	doi = {10.1103/PhysRevB.109.024431},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {109},
	unique-id = {34568147},
	issn = {2469-9950},
	abstract = {We construct a complete numerically exact 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 symmetry breaking. We extract the full numerically exact phase diagram, displaying a glassy phase with continuous replica symmetry breaking at small transverse fields and low temperatures. A paramagnetic phase emerges once thermal and quantum fluctuations melt the spin glass. We characterize both phases by extracting the order parameter as well as the static and dynamical local spin susceptibilities. The static susceptibility shows a plateau in the glassy phase, but it remains smooth across the phase boundary. For the imaginary part of the dynamical susceptibility, we find an Ohmic, i.e., linear in ω, scaling for small frequencies ω, with a slope independent of the transverse field. These results compare qualitatively well with ac susceptibility measurements on a dipole-coupled three-dimensional Ising magnet - the LiHoxY1-xF4 compound - in a transverse magnetic field. Our work provides a general framework for the exact numerical solution of mean-field quantum glass models, and it constitutes an important step towards understanding glassiness in realistic systems. © 2024 American Physical Society.},
	keywords = {GLASS; MEAN-FIELD; Monte Carlo methods; Continuous time systems; lithium compounds; Magnetic susceptibility; TRANSVERSE FIELD; Spin glass; Exact solution; SPIN-GLASS MODELS; Glassy phase; Quantum Monte Carlo methods; Sherrington; Time quantum; Continous time; Kirkpatrick},
	year = {2024},
	eissn = {2469-9969}
}

@article{MTMT:34448264,
	title = {Kardar-Parisi-Zhang scaling in the Hubbard model},
	url = {https://m2.mtmt.hu/api/publication/34448264},
	author = {Moca, Pascu Catalin and Werner, Miklós Antal and Valli, Angelo and Prosen, T. and Zaránd, Gergely Attila},
	doi = {10.1103/PhysRevB.108.235139},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {108},
	unique-id = {34448264},
	issn = {2469-9950},
	abstract = {We explore the Kardar-Parisi-Zhang (KPZ) scaling in the one-dimensional Hubbard model, which exhibits global SUc(2)⊗ - SUs(2) symmetry at half filling, for the pseudocharge and the total spin. We analyze dynamical scaling properties of high-temperature charge and spin correlations and transport. At half filling, we observe a clear KPZ scaling in both charge and spin sectors. Away from half filling, the SUc(2) charge symmetry is reduced to Uc(1), while the SUs(2) symmetry for the total spin is retained. Consequently, transport in the charge sector becomes ballistic, while KPZ scaling is preserved in the spin sector. These findings confirm the link between non-Abelian symmetries and KPZ scaling in the presence of integrability. We study two settings of the model: one involving a quench from a bipartitioned state asymptotically close to the T=∞ equilibrium state of the system, and another where the system is coupled to two Markovian reservoirs at the two edges of the chain. © 2023 American Physical Society.},
	keywords = {Hubbard model; Filling; Scaling properties; Ballistics; dynamical scaling; spin transport; SPIN CORRELATIONS; Highest temperature; One-dimensional Hubbard model; Half-filling; Charge correlation; charge symmetry; Kardar-parisi-zhang scaling},
	year = {2023},
	eissn = {2469-9969},
	orcid-numbers = {Valli, Angelo/0000-0002-0725-2425}
}

@article{MTMT:34187639,
	title = {Spectroscopic evidence for engineered hadronic bound state formation in repulsive fermionic SU ( N ) Hubbard systems},
	url = {https://m2.mtmt.hu/api/publication/34187639},
	author = {Werner, Miklós Antal and Moca, Pascu Catalin and Kormos, Márton and Legeza, Örs and Dóra, Balázs and Zaránd, Gergely Attila},
	doi = {10.1103/PhysRevResearch.5.043020},
	journal-iso = {PRRESEARCH},
	journal = {PHYSICAL REVIEW RESEARCH},
	volume = {5},
	unique-id = {34187639},
	year = {2023},
	eissn = {2643-1564}
}

@article{MTMT:34143529,
	title = {Combining the in-medium similarity renormalization group with the density matrix renormalization group: Shell structure and information entropy},
	url = {https://m2.mtmt.hu/api/publication/34143529},
	author = {Tichai, A. and Knecht, S. and Kruppa, András Tibor and Legeza, Örs and Moca, Pascu Catalin and Schwenk, A. and Werner, Miklós Antal and Zaránd, Gergely Attila},
	doi = {10.1016/j.physletb.2023.138139},
	journal-iso = {PHYS LETT B},
	journal = {PHYSICS LETTERS B},
	volume = {845},
	unique-id = {34143529},
	issn = {0370-2693},
	abstract = {We propose a novel many-body framework combining the density matrix renormalization group (DMRG) with the valence-space (VS) formulation of the in-medium similarity renormalization group. This hybrid scheme admits for favorable computational scaling in large-space calculations compared to direct diagonalization. The capacity of the VS-DMRG approach is highlighted in ab initio calculations of neutron-rich nickel isotopes based on chiral two- and three-nucleon interactions, and allows us to perform converged ab initio computations of ground and excited state energies. We also study orbital entanglement in the VS-DMRG, and investigate nuclear correlation effects in oxygen, neon, and magnesium isotopes. The explored entanglement measures reveal nuclear shell closures as well as pairing correlations.},
	year = {2023},
	eissn = {1873-2445}
}

@article{MTMT:34064508,
	title = {Multiparticle quantum walk: A dynamical probe of topological many-body excitations},
	url = {https://m2.mtmt.hu/api/publication/34064508},
	author = {Ostahie, Bogdan and Sticlet, Doru and Moca, Pascu Catalin and Dóra, Balázs and Werner, Miklós Antal and Asbóth, János Károly and Zaránd, Gergely Attila},
	doi = {10.1103/PhysRevB.108.035126},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {108},
	unique-id = {34064508},
	issn = {2469-9950},
	year = {2023},
	eissn = {2469-9969},
	orcid-numbers = {Sticlet, Doru/0000-0003-0646-1978}
}

@article{MTMT:33684677,
	title = {PT -symmetry phase transition in a Bose-Hubbard model with localized gain and loss},
	url = {https://m2.mtmt.hu/api/publication/33684677},
	author = {Moca, Pascu Catalin and Sticlet, Doru and Dóra, Balázs and Zaránd, Gergely Attila},
	doi = {10.1103/PhysRevB.107.115111},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {107},
	unique-id = {33684677},
	issn = {2469-9950},
	year = {2023},
	eissn = {2469-9969},
	orcid-numbers = {Sticlet, Doru/0000-0003-0646-1978}
}

@article{MTMT:33536209,
	title = {Toward Large-Scale Restricted Active Space Calculations Inspired by the Schmidt Decomposition},
	url = {https://m2.mtmt.hu/api/publication/33536209},
	author = {Barcza, Gergely and Werner, Miklós Antal and Zaránd, Gergely Attila and Pershin, Anton and Benedek, Zsolt and Legeza, Örs and Szilvási, T.},
	doi = {10.1021/acs.jpca.2c05952},
	journal-iso = {J PHYS CHEM A},
	journal = {JOURNAL OF PHYSICAL CHEMISTRY A},
	volume = {126},
	unique-id = {33536209},
	issn = {1089-5639},
	year = {2022},
	eissn = {1520-5215},
	pages = {9709-9718}
}

@article{MTMT:33368446,
	title = {Finite temperature dynamics in gapped 1D models in the sine-Gordon family},
	url = {https://m2.mtmt.hu/api/publication/33368446},
	author = {Kormos, Márton and Vörös, Dániel and Zaránd, Gergely Attila},
	doi = {10.1103/PhysRevB.106.205151},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {106},
	unique-id = {33368446},
	issn = {2469-9950},
	abstract = {The sine-Gordon model appears as the low-energy effective field theory of various one-dimensional gapped quantum systems. Here we investigate the dynamics of generic, nonintegrable systems belonging to the sine-Gordon family at finite temperature within the semiclassical approach. Focusing on timescales where the effect of nontrivial quasiparticle scatterings becomes relevant, we obtain universal results for the long-time behavior of dynamical correlation functions. We find that correlation functions of vertex operators behave neither ballistically nor diffusively but follow a stretched exponential decay in time. We also study the full counting statistics of the topological current and find that distribution of the transferred charge is non-Gaussian with its cumulants scaling nonuniformly in time. © 2022 American Physical Society.},
	keywords = {quantum optics; Time-scales; Lower energies; Quantum system; Finite temperatures; One-dimensional; One-dimensional model; effective field theory; Temperature dynamics; Semiclassical approaches; Sine Gordon model},
	year = {2022},
	eissn = {2469-9969}
}

@article{MTMT:33208843,
	title = {Entanglement and seniority},
	url = {https://m2.mtmt.hu/api/publication/33208843},
	author = {Kruppa, András Tibor and Kovács, József and Salamon, Péter and Legeza, Örs and Zaránd, Gergely Attila},
	doi = {10.1103/PhysRevC.106.024303},
	journal-iso = {PHYS REV C},
	journal = {PHYSICAL REVIEW C},
	volume = {106},
	unique-id = {33208843},
	issn = {2469-9985},
	year = {2022},
	eissn = {2469-9993}
}

@article{MTMT:33098390,
	title = {Classical theory of universal quantum work distribution in chaotic and disordered non-interacting Fermi systems},
	url = {https://m2.mtmt.hu/api/publication/33098390},
	author = {Grabarits, András József and Kormos, Márton and Lovas, Izabella and Zaránd, Gergely Attila},
	doi = {10.1038/s41598-022-18796-3},
	journal-iso = {SCI REP},
	journal = {SCIENTIFIC REPORTS},
	volume = {12},
	unique-id = {33098390},
	issn = {2045-2322},
	abstract = {We present a universal theory of quantum work statistics in generic disordered non-interacting Fermi systems, displaying a chaotic single-particle spectrum captured by random matrix theory. We consider quantum quenches both within a driven random matrix formalism and in an experimentally accessible microscopic model, describing a two-dimensional disordered quantum dot. By extending Anderson’s orthogonality determinant formula to compute quantum work distribution, we demonstrate that work statistics is non-Gaussian and is characterized by a few dimensionless parameters. At longer times, quantum interference effects become irrelevant and the quantum work distribution is well-described in terms of a purely classical ladder model with a symmetric exclusion process in energy space, while bosonization and mean field methods provide accurate analytical expressions for the work statistics. Our results demonstrate the universality of work distribution in generic chaotic Fermi systems, captured by the analytical predictions of a mean field theory, and can be verified by calorimetric measurements on nanoscale circuits.},
	year = {2022},
	eissn = {2045-2322}
}