@article{MTMT:34508958,
	title = {Nonequilibrium time evolution in the sine-Gordon model},
	url = {https://m2.mtmt.hu/api/publication/34508958},
	author = {Szász-Schagrin, Dávid and Lovas, Lia Izabella and Takács, Gábor},
	doi = {10.1103/PhysRevB.109.014308},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {109},
	unique-id = {34508958},
	issn = {2469-9950},
	year = {2024},
	eissn = {2469-9969},
	orcid-numbers = {Takács, Gábor/0000-0002-7075-3580}
}

@article{MTMT:34431639,
	title = {Thermodynamics and fractal Drude weights in the sine-Gordon model},
	url = {https://m2.mtmt.hu/api/publication/34431639},
	author = {Nagy, Botond and Kormos, Márton and Takács, Gábor},
	doi = {10.1103/PhysRevB.108.L241105},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {108},
	unique-id = {34431639},
	issn = {2469-9950},
	abstract = {The sine-Gordon model is a paradigmatic quantum field theory that provides the low-energy effective description of many gapped one-dimensional systems. Despite this fact, its complete thermodynamic description in all its regimes has been lacking. Here, we fill this gap and derive the framework that captures its thermodynamics and serves as the basis of its hydrodynamic description. As a first application, we compute the Drude weight characterizing the ballistic transport of topological charge and demonstrate that its dependence on the value of the coupling shows a fractal structure, similar to the gapless phase of the XXZ spin chain. The thermodynamic framework can be applied to study other features of nonequilibrium dynamics in the sine-Gordon model using generalized hydrodynamics, opening the way to a wide array of theoretical studies and potential novel experimental predictions.},
	year = {2023},
	eissn = {2469-9969},
	orcid-numbers = {Takács, Gábor/0000-0002-7075-3580}
}

@article{MTMT:33644685,
	title = {Electrically driven singlet-triplet transition in triangulene spin-1 chains},
	url = {https://m2.mtmt.hu/api/publication/33644685},
	author = {Martínez-Carracedo, Gabriel and Oroszlány, László and García-Fuente, Amador and Szunyogh, László and Ferrer, Jaime},
	doi = {10.1103/PhysRevB.107.035432},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {107},
	unique-id = {33644685},
	issn = {2469-9950},
	year = {2023},
	eissn = {2469-9969},
	orcid-numbers = {Oroszlány, László/0000-0001-5682-6424}
}

@article{MTMT:32940001,
	title = {False vacuum decay in the ( 1 + 1 )-dimensional φ 4 theory},
	url = {https://m2.mtmt.hu/api/publication/32940001},
	author = {Szász-Schagrin, Dávid and Takács, Gábor},
	doi = {10.1103/PhysRevD.106.025008},
	journal-iso = {PHYS REV D},
	journal = {PHYSICAL REVIEW D},
	volume = {106},
	unique-id = {32940001},
	issn = {2470-0010},
	abstract = {The false vacuum is a metastable state that can occur in quantum field theory, and its decay was first studied semiclassically by Coleman. In this work, we consider the 1+1 dimensional φ4 theory, which is the simplest model that provides a realization of this problem. We realize the decay as a quantum quench and study the subsequent evolution using a truncated Hamiltonian approach. In the thin wall limit, the decay rate can be described in terms of the mass of the kink interpolating between the vacua in the degenerate limit and the energy density difference between the false and true vacuum once the degeneracy is lifted by a symmetry breaking field, also known as the latent heat. We demonstrate that the numerical simulations agree well with the theoretical prediction for several values of the coupling in a range of the value of the latent heat, apart from a normalization factor, which only depends on the interaction strength.},
	year = {2022},
	eissn = {2470-0029},
	orcid-numbers = {Takács, Gábor/0000-0002-7075-3580}
}

@article{MTMT:32794934,
	title = {Chirally factorised truncated conformal space approach},
	url = {https://m2.mtmt.hu/api/publication/32794934},
	author = {Horváth, Dávid and Hódsági, Kristóf and Takács, Gábor},
	doi = {10.1016/j.cpc.2022.108376},
	journal-iso = {COMPUT PHYS COMMUN},
	journal = {COMPUTER PHYSICS COMMUNICATIONS},
	volume = {277},
	unique-id = {32794934},
	issn = {0010-4655},
	abstract = {Truncated Conformal Space Approach (TCSA) is a highly efficient method to compute spectra, operator matrix elements and time evolution in quantum field theories defined as relevant perturbations of 1+1-dimensional conformal field theories. However, similarly to other exact diagonalisation methods, TCSA is ridden with the “curse of dimensionality”: the dimension of the Hilbert space increases exponentially with the (square root of the) truncation level, limiting its precision by the available memory resources. Here we describe an algorithm which exploits the chiral factorisation property of conformal field theory with periodic boundary conditions to achieve a substantial improvement in the truncation level. The Chirally Factorised TCSA (CFTCSA) algorithm presented here works with inputs describing the necessary CFT data in a specified format. It makes possible much more precise calculations with given computing resources and extends the reach of the method to problems requiring large Hilbert space dimensions. In fact, it has already been used in a number of recent works ranging from determination of form factors, through studying confinement of topological excitations to non-equilibrium dynamics. Besides the description of the algorithm, a MATLAB implementation of the algorithm is also provided as an ancillary file package, supplemented with example codes computing spectra, matrix elements and time evolution, and with CFT data for three different quantum field theories. We also give a detailed how-to guide for constructing the required CFT data for Virasoro minimal models with central charge c<1, and for the massless free boson with c=1.},
	year = {2022},
	eissn = {1879-2944},
	orcid-numbers = {Takács, Gábor/0000-0002-7075-3580}
}

@article{MTMT:32584991,
	title = {Quantum quenches in an interacting field theory: Full quantum evolution versus semiclassical approximations},
	url = {https://m2.mtmt.hu/api/publication/32584991},
	author = {Szász-Schagrin, Dávid and Lovas, Lia Izabella and Takács, Gábor},
	doi = {10.1103/PhysRevB.105.014305},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {105},
	unique-id = {32584991},
	issn = {2469-9950},
	year = {2022},
	eissn = {2469-9969},
	orcid-numbers = {Takács, Gábor/0000-0002-7075-3580}
}

@{MTMT:33633681,
	title = {VVER-440 típusú kiégett üzemanyagkazetták nukleáris biztosítéki felügyeleti célú vizsgálata a hasadási termékek gamma-spektrometriai mérésével},
	url = {https://m2.mtmt.hu/api/publication/33633681},
	author = {Kirchknopf, Péter and Almási, I. and Radócz, Gábor and Nemes, I. and Szalóki, Imre and Völgyesi, P.},
	booktitle = {Őszi Radiokémiai Napok 2021},
	unique-id = {33633681},
	year = {2021},
	pages = {112-112},
	orcid-numbers = {Radócz, Gábor/0000-0002-2987-0419}
}

@{MTMT:33633650,
	title = {DESIGN AND OPTIMIZATION OF A LOW-BACKGROUND GAMMA SPECTROMETER FOR FORENSIC AND IN-SITU ANALYSIS},
	url = {https://m2.mtmt.hu/api/publication/33633650},
	author = {Szarvas, Csongor Kristóf and Kirchknopf, Péter and István, Almási and Gergely, Dósa and Katalin, Zsuzsanna Szabó and Cong, Tam Nguyen and Péter, Völgyesi and Radócz, Gábor and Szalóki, Imre},
	booktitle = {Őszi Radiokémiai Napok 2021},
	unique-id = {33633650},
	year = {2021},
	pages = {111-111},
	orcid-numbers = {Radócz, Gábor/0000-0002-2987-0419}
}

@{MTMT:33633630,
	title = {Alacsony hátterű gamma-spektrometriai mérőrendszer tervezése és optimalizálása törvényszéki és in-situ analitikai célokra},
	url = {https://m2.mtmt.hu/api/publication/33633630},
	author = {Szarvas, Csongor Kristóf and Kirchknopf, Péter and Almási, István and Dósa, Gergely and Szabó, Katalin Zsuzsanna and Nguyen, Cong Tam and Völgyesi, Péter and Radócz, Gábor and Szalóki, Imre},
	booktitle = {Őszi Radiokémiai Napok 2021},
	unique-id = {33633630},
	year = {2021},
	pages = {110},
	orcid-numbers = {Radócz, Gábor/0000-0002-2987-0419}
}

@article{MTMT:32575599,
	title = {Relativistic first-principles theory of Yu-Shiba-Rusinov states applied to Mn adatoms and Mn dimers on Nb(110)},
	url = {https://m2.mtmt.hu/api/publication/32575599},
	author = {Nyári, Bendegúz Tamás and Lászlóffy, András and Szunyogh, László and Csire, G and Park, K and Ujfalussy, Balázs},
	doi = {10.1103/PhysRevB.104.235426},
	journal-iso = {PHYS REV B},
	journal = {PHYSICAL REVIEW B},
	volume = {104},
	unique-id = {32575599},
	issn = {2469-9950},
	abstract = {We present a fully relativistic first-principles-based theoretical approach for the calculation of the spectral properties of magnetic impurities on the surface of a superconducting substrate, providing a material specific framework for the investigation of the Yu-Shiba-Rusinov (YSR) states. By using a suitable orbital decomposition of the local densities of states we discuss in great detail the formation of the YSR states for an Mn adatom and for two kinds of Mn dimers placed on the Nb(110) surface and compare our results to recent experimental findings. In the case of the adatom we find that the spin-orbit coupling slightly shifts some of the YSR peaks and also the local spin polarization on the Nb atoms has marginal effects on their positions. Moreover, by scaling the exchange field on the Mn site we could explain the lack of the dx(2)-y(2)-like YSR state in the spectrum. While our results for a close packed ferromagnetic dimer are in satisfactory agreement with the experimentally observed splitting of the YSR states, in the case of an antiferromagnetic dimer we find that the spin-orbit coupling is not sufficiently large to explain the splitting of the YSR states seen in the experiment. Changing the relative orientation of the magnetic moments in this dimer induces splitting of the YSR states and also shifts their energy, leading even to the formation of a zero bias peak in the case of the deepest YSR state.},
	keywords = {SUPERCONDUCTOR},
	year = {2021},
	eissn = {2469-9969},
	orcid-numbers = {Nyári, Bendegúz Tamás/0000-0001-5524-9995}
}