Zobrazeno 1 - 10
of 5 615
pro vyhledávání: '"A. M. Sanchez"'
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
There is an ongoing debate in the origin of unusual bumps in the resistive Hall measurements in SrRuO3 systems. Here, the authors analyze surface inversion symmetry breaking and confirm the role of an interfacial Dzyaloshinskii–Moriya interaction a
Externí odkaz:
https://doaj.org/article/e1fb9ee9b9d440528b7cea3e595d304d
Autor:
Martín-Caro, Alberto García, García-Moreno, Gerardo, Olmedo, Javier, Velázquez, Jose M. Sánchez
Publikováno v:
Phys. Rev. D 110, 025007 (2024)
We present a detailed description of a quantum scalar field theory within a flat spacetime confined to a cavity with perfectly reflecting moving boundaries. Moreover, we establish an equivalence between this time-dependent setting and a field theory
Externí odkaz:
http://arxiv.org/abs/2404.06166
Autor:
Velázquez, J. M. Sánchez, Steiner, A., Freund, R., Guevara-Bertsch, M., Marciniak, Ch. D., Monz, T., Bermudez, A.
Noise is both ubiquitous and generally deleterious in settings where precision is required. This is especially true in the quantum technology sector where system utility typically decays rapidly under its influence. Understanding the noise in quantum
Externí odkaz:
http://arxiv.org/abs/2402.14530
Autor:
Sánchez, Carlos Balado, Redondo, Rebeca P. Díaz, Vilas, Ana Fernández, Bermúdez, Angel M. Sánchez
Publikováno v:
Computer Applications in Engineering Education, 2019, vol. 27, no 2, p. 371-379
In this paper we introduce a proposal to provide students in labs with an alternative to the traditional visible range spectrophotometers, whose acquisition and maintenance entails high costs, based on smartphones. Our solution faced two aspects. On
Externí odkaz:
http://arxiv.org/abs/2312.08104
Gravitational particle production of spectator fields due to the expansion universe during the inflationary and reheating phases of the early universe is of particular interest in the context of dark matter, since it allows to constrain the propertie
Externí odkaz:
http://arxiv.org/abs/2310.07515
Autor:
Ortiz, J. L., Kretlow, M., Schnabel, C., Morales, N., Flores-Martín, J., González, M. Sánchez, Casarramona, F., Selva, A., Perelló, C., Román-Reche, A., Alonso, S., Rizos, J. L., Gonçalves, R., Castillo, A., Madiedo, J. M., Sánchez, P. Martínez, andújar, J. M. Fernández, Maestre, J. L., Smith, E., Gil, M., Pelenjow, V., Soriano, S. Moral, Martí, J., Luque-Escamilla, P. L., Casas, R., Casal, J. Delgado, Rovira, J., Aceituno, F. J., Dekert, V., Guimerá, V. de Ory, Estepa, J. Serrano, Kilic, Y., Leiva, R., Santos-Sanz, P., Duffard, R., Fernández-Valenzuela, E., Vara-Lubiano, M., Alvarez-Candal, A., Rommel, F. L.
On 12 December 2023, the star $\alpha$ Orionis (Betelgeuse) will be occulted by the asteroid (319) Leona. This represents an extraordinary and unique opportunity to analyze the diameter and brightness distribution of Betelgeuse's photosphere with ext
Externí odkaz:
http://arxiv.org/abs/2309.12272
Autor:
Martín-Caro, Alberto García, García-Moreno, Gerardo, Olmedo, Javier, Velázquez, Jose M. Sánchez
Publikováno v:
Phys. Rev. D 108, L061701 (2023)
We propose a setting that simulates Hawking radiation from an analogue bouncing geometry, i.e., a collapsing geometry that reverts its collapse after a finite time, in a setup consisting of a coplanar waveguide terminated in superconducting quantum-i
Externí odkaz:
http://arxiv.org/abs/2306.05250
Autor:
Álvarez-Domínguez, Álvaro, Cembranos, José A. R., Garay, Luis J., Martín-Benito, Mercedes, Parra-López, Álvaro, Velázquez, Jose M. Sánchez
Publikováno v:
Phys. Rev. D 108, 065008 (2023)
We provide a reinterpretation of the quantum vacuum ambiguities that one encounters when studying particle creation phenomena due to an external and time-dependent agent. We propose a measurement-motivated understanding: Each way of measuring the num
Externí odkaz:
http://arxiv.org/abs/2303.07436
Late vacuum choice and slow roll approximation in gravitational particle production during reheating
Publikováno v:
JCAP08(2023)060
In the transition between inflation and reheating, the curvature scalar typically undergoes oscillations which have significant impact on the density of gravitationally produced particles. The commonly used adiabatic vacuum prescription for the extra
Externí odkaz:
http://arxiv.org/abs/2301.04674
Publikováno v:
Quantum 7, 1042 (2023)
We study the phenomenon of cosmological particle production of Dirac fermions in a Friedman-Robertson-Walker spacetime, focusing on a (1+1)-dimensional case in which the evolution of the scale factor is set by the equations of Jackiw-Teitelboim gravi
Externí odkaz:
http://arxiv.org/abs/2212.01355