Výsledky vyhledávání - "Ignacio García-Mata"

Akademický článek

Effective versus Floquet theory for the Kerr parametric oscillator

Autor: Ignacio García-Mata, Rodrigo G. Cortiñas, Xu Xiao, Jorge Chávez-Carlos, Victor S. Batista, Lea F. Santos, Diego A. Wisniacki

Publikováno v: Quantum, Vol 8, p 1298 (2024)

Parametric gates and processes engineered from the perspective of the static effective Hamiltonian of a driven system are central to quantum technology. However, the perturbative expansions used to derive static effective models may not be able to ef

Externí odkaz: https://doaj.org/article/b44763775fc64bc685c2ddfb3a0d2d55

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Impact of chaos on precursors of quantum criticality

Autor: Ignacio García-Mata, Eduardo Vergini, Diego A. Wisniacki

Excited-state quantum phase transitions (ESQPTs) are critical phenomena that generate singularities in the spectrum of quantum systems. {For systems with a classical counterpart,} these phenomena have their origin in the classical limit when the sepa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e59cffb8fe09951eb0b718da405487ff
http://arxiv.org/abs/2112.06648

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Symmetry Violation of Quantum Multifractality: Gaussian fluctuations versus Algebraic Localization

Autor: Bertrand Georgeot, Olivier Giraud, Gabriel Lemarié, A. M. Bilen, Ignacio García-Mata

Publikováno v: Physical Review Research
Physical Review Research, American Physical Society, 2021, 3, pp.L022023. ⟨10.1103/PhysRevResearch.3.L022023⟩
Physical Review Research, 2021, 3, pp.L022023. ⟨10.1103/PhysRevResearch.3.L022023⟩

Quantum multifractality is a fundamental property of systems such as non-interacting disordered systems at an Anderson transition and many-body systems in Hilbert space. Here we discuss the origin of the presence or absence of a fundamental symmetry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e7fa06dc7694ef31205b5204bfba78f
http://arxiv.org/abs/2103.03068

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Signatures of quantum chaos transition in short spin chains

Autor: Diego Ariel Wisniacki, Ignacio García-Mata, Rodolfo A. Jalabert, Emiliano M. Fortes

Publikováno v: EPL
EPL, 2020, 130 (6), pp.60001. ⟨10.1209/0295-5075/130/60001⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

The non-integrability of quantum systems, often associated with chaotic behavior, is a concept typically applied to cases with a high-dimensional Hilbert space Among different indicators signaling this behavior, the study of the long-time oscillation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d32f779cc69d989a00e54e70e91123c1
https://hal.archives-ouvertes.fr/hal-02613267

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Multifractality of open quantum systems

Autor: Olivier Giraud, Agustín M. Bilen, Bertrand Georgeot, Ignacio García-Mata

Publikováno v: Physical Review E
Physical Review E, American Physical Society (APS), 2019, 100, pp.032223. ⟨10.1103/PhysRevE.100.032223⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

We study the eigenstates of open maps whose classical dynamics is pseudointegrable and for which the corresponding closed quantum system has multifractal properties. Adapting the existing general framework developed for open chaotic quantum maps, we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f7fc40257505175b0f95b6c4a4faa30
https://pubmed.ncbi.nlm.nih.gov/31639907

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Two critical localization lengths in the Anderson transition on random graphs

Autor: Rémy Dubertrand, John Martin, Olivier Giraud, Ignacio García-Mata, Gabriel Lemarié, Bertrand Georgeot

Publikováno v: Physical Review Research
Physical Review Research, American Physical Society, 2020, 2, pp.012020(R). ⟨10.1103/PhysRevResearch.2.012020⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

We present a full description of the nonergodic properties of wavefunctions on random graphs without boundary in the localized and critical regimes of the Anderson transition. We find that they are characterized by two critical localization lengths:

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a69711d064005fc0ab612246e3e5e66
http://arxiv.org/abs/1904.08869

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Gauging classical and quantum integrability through out-of-time ordered correlators

Autor: Diego Ariel Wisniacki, Emiliano M. Fortes, Ignacio García-Mata, Rodolfo A. Jalabert

Publikováno v: Phys.Rev.E
Phys.Rev.E, 2019, 100 (4), pp.042201. ⟨10.1103/PhysRevE.100.042201⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Out-of-time-order correlators (OTOCs) have been proposed as a probe of chaos in quantum mechanics, on the basis of their short-time exponential growth found in some particular set-ups. However, it has been seen that this behavior is not universal. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b5998d095b377036e043a4171970d14

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Semiclassical theory of out-of-time-order correlators for low-dimensional classically chaotic systems

Autor: Diego Ariel Wisniacki, Rodolfo A. Jalabert, Ignacio García-Mata

Publikováno v: Phys.Rev.E
Phys.Rev.E, 2018, 98 (6), pp.062218. ⟨10.1103/PhysRevE.98.062218⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

The out-of-time-order correlator (OTOC), recently analyzed in several physical contexts, is studied for low-dimensional chaotic systems through semiclassical expansions and numerical simulations. The semiclassical expansion for the OTOC yields a lead

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c55d8a51f320df8904f447d522716383
http://arxiv.org/abs/1808.04383

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Chaos signatures in the short and long time behavior of the out-of-time ordered correlator

Autor: Ignacio García-Mata, Augusto J. Roncaglia, Rodolfo A. Jalabert, Marcos Saraceno, Diego Ariel Wisniacki

Publikováno v: Phys.Rev.Lett.
Phys.Rev.Lett., 2018, 121 (21), pp.210601. ⟨10.1103/PhysRevLett.121.210601⟩
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Two properties are needed for a classical system to be chaotic: exponential stretching and mixing. Recently, out-of-time order correlators were proposed as a measure of chaos in a wide range of physical systems. While most of the attention has previo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5795412feb107217da15a74fd454d29d
https://hal.archives-ouvertes.fr/hal-01846768

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Quantum-to-classical transition in the work distribution for chaotic systems

Autor: Ignacio García-Mata, Augusto J. Roncaglia, Diego Ariel Wisniacki

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

The work distribution is a fundamental quantity in nonequilibrium thermodynamics mainly due to its connection with fluctuations theorems. Here we develop a semiclassical approximation to the work distribution for a quench process in chaotic systems.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1db0d7af23d693fddcc05d0e097b1b4
https://journals.aps.org/pre/abstract/10.1103/PhysRevE.95.050102

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