Authors: Garcia-Abenza, A.; No, J. M. Journal: EUROPEAN PHYSICAL JOURNAL C Publication date: 2022/02/01 DOI: 10.1140/epjc/s10052-022-10089-3 Abstract: High-energy ( )gamma gamma colliders constitute a potential running mode of future lepton colliders such as the ILC and CLIC. We study the sensitivity of a high-energy gamma gamma collider to the Higgs portal scenario to a hidden [...]
Authors: Abud, A. Abed; Abi, B.; Acciarri, R.; Acero, M. A.; Adames, M. R.; Adamov, G.; Adamowski, M.; Adams, D.; Adinolfi, M.; Aduszkiewicz, A.; Aguilar, J.; Ahmad, Z.; Ahmed, J.; Aimard, B.; Ali-Mohammadzadeh, B.; Alion, T.; Allison, K.; Monsalve, S. Alonso; AlRashed, M.; Alt, C.; Alton, A.; Alvarez, R.; Amedo, P.; Anderson, J.; Andreopoulos, C.; [...]
Authors: Traykova, Dina; Bellini, Emilio; Ferreira, Pedro G.; Garcia-Garcia, Carlos; Noller, Johannes; Zumalacarregui, Miguel Journal: PHYSICAL REVIEW D Publication date: 2021/10/01 DOI: 10.1103/PhysRevD.104.083502 Abstract: Attempts at constraining theories of late time accelerated expansion often assume broad priors for the parameters in their phenomenological description. Focusing on shift-symmetric scalar-tensor theories with standard gravitational wave speed, we [...]
Authors: Nicola, Andrina; Garcia-Garcia, Carlos; Alonso, David; Dunkley, Jo; Ferreira, Pedro G.; Slosar, Anze; Spergel, David N. Journal: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS Publication date: 2021/03/01 DOI: 10.1088/1475-7516/2021/03/067 Abstract: Cosmic shear is one of the most powerful probes of Dark Energy, targeted by several current and future galaxy surveys. Lensing shear, however, is only [...]
Authors: Garcia-Garcia, Carlos; Ruiz-Zapatero, Jaime; Alonso, David; Bellini, Emilio; Ferreira, Pedro G.; Mueller, Eva-Maria; Nicola, Andrina; Ruiz-Lapuente, Pilar Journal: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS Publication date: 2021/10/01 DOI: 10.1088/1475-7516/2021/10/030 Abstract: In order to investigate the origin of the ongoing tension between the amplitude of matter fluctuations measured by weak lensing experiments at low redshifts [...]
Authors: Nicola, Andrina; Garcia-Garcia, Carlos; Alonso, David; Dunkley, Jo; Ferreira, Pedro G.; Slosar, Anze; Spergel, David N. Journal: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS Publication date: 2021/03/01 DOI: 10.1088/1475-7516/2021/03/067 Abstract: Cosmic shear is one of the most powerful probes of Dark Energy, targeted by several current and future galaxy surveys. Lensing shear, however, is only [...]
Authors: Martin-Vazquez, Gonzalo; Sabin, Carlos Contribution: Article Journal: CLASSICAL AND QUANTUM GRAVITY Publication date: 2020/02/20 DOI: 10.1088/1361-6382/ab5f3f Abstract: In principe, general relativity seems to allow the existence of closed timelike curves (CTC). However, when quantum effects are considered, it is likely that their existence is prevented by some kind of chronological protection mechanism, as Hawking conjectured. [...]
Authors: Garcia-Garcia, Carlos; Bellini, Emilio; Ferreira, Pedro G.; Traykova, Dina; Zumalacarregui, Miguel Contribution: Article Journal: PHYSICAL REVIEW D Publication date: 2020/03/05 DOI: 10.1103/PhysRevD.101.063508 Abstract: The late time acceleration of the Universe can be characterized in terms of an extra, time-dependent, component of the Universe-dark energy. The simplest proposal for dark energy is a scalar-tensor theory-quintessence-which consists [...]
Authors: Sabin, Carlos Contribution: Article Journal: UNIVERSE Publication date: 2020/09/09 DOI: 10.3390/universe6090149 Abstract: We propose an experimental setup to test the effect of curved spacetime upon the extraction of entanglement from the quantum field vacuum to a pair of two-level systems. We consider two superconducting qubits coupled to a dc-SQUID array embedded into an open microwave [...]
Authors: Valido, Antonio A. Contribution: Article Journal: PHYSICAL REVIEW D Publication date: 2019/01/03 DOI: 10.1103/PhysRevD.99.016003 Abstract: Conventional Brownian motion in harmonic systems has provided a deep understanding of a great diversity of dissipative phenomena. We address a rather fundamental microscopic description for the (linear) dissipative dynamics of two-dimensional harmonic oscillators that contains the conventional Brownian motion [...]