Zobrazeno 1 - 10
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pro vyhledávání: '"Ferreira, A. P. M."'
The study of ultralight dark matter helps constrain the lower bound on minimally coupled dark matter models. The granular structure of ultralight dark matter density fields produces metric perturbations which have been identified as a potentially int
Externí odkaz:
http://arxiv.org/abs/2411.18051
Autor:
Novaes, Camila P., Thiele, Leander, Armijo, Joaquin, Cheng, Sihao, Cowell, Jessica A., Marques, Gabriela A., Ferreira, Elisa G. M., Shirasaki, Masato, Osato, Ken, Liu, Jia
We present cosmological constraints from weak lensing with the Subaru Hyper Suprime-Cam (HSC) first-year (Y1) data, using a simulation-based inference (SBI) method. % We explore the performance of a set of higher-order statistics (HOS) including the
Externí odkaz:
http://arxiv.org/abs/2409.01301
Cosmic birefringence, the observed rotation of the polarization plane of the cosmic microwave background (CMB), serves as a compelling probe for parity-violating physics beyond the Standard Model. This study explores the potential of ultralight axion
Externí odkaz:
http://arxiv.org/abs/2408.08063
Frequentist parameter inference using profile likelihoods has received increased attention in the cosmology literature recently since it can give important complementary information to Bayesian credible intervals. Here, we give a pedagogical review t
Externí odkaz:
http://arxiv.org/abs/2408.07700
Unmagnetized cold plasma modes are investigated in the context of the chiral Maxwell-Carroll-Field-Jackiw (MCJF) electrodynamics, where the axion chiral factor acts retrieving some typical properties of magnetized plasmas. The Maxwell equations are r
Externí odkaz:
http://arxiv.org/abs/2407.20528
Publikováno v:
Phys. Rev. B 110, 174427 (2024)
In this work, we investigate the reflection properties on the interface between an ordinary dielectric medium and a dielectric supporting a magnetic current (equivalent to a dielectric governed by axion electrodynamics). Considering the usual Maxwell
Externí odkaz:
http://arxiv.org/abs/2407.06028
We discuss how classical electromagnetic techniques are useful to describe optical effects in conventional and chiral dielectric systems endowed with optical activity. Starting from the Maxwell equations and constitutive relations of the medium, we o
Externí odkaz:
http://arxiv.org/abs/2406.07654
Autor:
Ferreira, Manuel Alberto M.
A method to study and evaluate the occupation of a Hospital Surgery Service, with some specificity in its activity, is outlined in this work. Its application is exemplified with real data, and it is shown that it is simple, practical, and useful and
Externí odkaz:
http://arxiv.org/abs/2403.05554
Publikováno v:
Phys. Rev. D 109, 076003 (2024)
In this work, we study the propagation and absorption of plasma waves in the context of the Maxwell-Carroll-Field-Jackiw (MCFJ) electrodynamics with a purely spacelike background playing the role of the anomalous Hall conductivity, concerning the ano
Externí odkaz:
http://arxiv.org/abs/2312.13196
Autor:
Ferreira, Manuel Alberto M.
It is a very hard task to compute an exact solution for the differential equations, with differences, system that allows the determination of the M|M|m|m system transient probabilities. The respective complexity grows with m. The computations are ext
Externí odkaz:
http://arxiv.org/abs/2312.03870