Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Holanda, Pedro"'
Quantum decoherence effects in neutrinos, described by the open quantum systems formalism, serve as a gateway to explore potential new physics, including quantum gravity. Previous research extensively investigated these effects across various neutrin
Externí odkaz:
http://arxiv.org/abs/2306.17591
In this paper, we revisit the SN1987A neutrino data to see its constraints on flavor conversion. We are motivated by the fact that most works that analyze this data consider a specific conversion mechanism, such as the MSW (Mikheyev-Smirnov-Wolfenste
Externí odkaz:
http://arxiv.org/abs/2301.11407
Popular extensions of the standard model of particle physics feature new fields and symmetries which could, for example, dynamically generate neutrino masses from $B-L$ spontaneous symmetry breaking. If a new light scalar that decays into dark radiat
Externí odkaz:
http://arxiv.org/abs/2205.12353
The SN1987A detection through neutrinos was an event of great importance in neutrino physics, being the first detection of neutrinos created outside our solar system, and then inaugurating the era of experimental neutrino astronomy. The data have bee
Externí odkaz:
http://arxiv.org/abs/2108.06448
We search for scalar and tensor non-standard interactions using (anti)-electron neutrino disappearance in oscillation data. We found a slight preference for non-zero CP violation, coming from both tensor and scalar interactions. The preference for CP
Externí odkaz:
http://arxiv.org/abs/2106.15725
Autor:
de Holanda, Pedro Cunha
The solar neutrino flux arrives at Earth as an incoherent admixture of mass eigenstates, and then solar neutrino detection constitute a blind probe to the oscillation pattern of the neutrino flavour conversion. Consequently, it is also impossible to
Externí odkaz:
http://arxiv.org/abs/1909.09504
Autor:
Holanda, Pedro Thiago Timbó
Publikováno v:
Repositório Institucional da UFPRUniversidade Federal do ParanáUFPR.
Orientador : Prof. Dr. Eduardo Cunha de Almeida
Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Exatas, Programa de Pós-Graduação em Informática. Defesa: Curitiba, 24/02/2017
Inclui referências : f. 41-43
Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Exatas, Programa de Pós-Graduação em Informática. Defesa: Curitiba, 24/02/2017
Inclui referências : f. 41-43
Externí odkaz:
http://hdl.handle.net/1884/46126
Autor:
Holanda, Pedro H. F., Guilherme, Bruno, Pontello, Luciana Fujii, Goussevskaia, Olga, Silva, Ana Paula Couto e
This report discusses dimensionality reduction techniques used to create a music map - a map where the distances between songs represent their similarity and that can be used to recommend songs. We evaluate two techniques: Isomap and L-Isomap.
Externí odkaz:
http://arxiv.org/abs/1605.08494
Autor:
Pontello, Luciana Fujii, Holanda, Pedro H. F., Guilherme, Bruno, Cardoso, Joao Paulo V., Goussevskaia, Olga, Silva, Ana Paula Couto
This report analyses data collected from Last.fm and used to create a real-time recommendation system. We collected over 2M songs and 1M tags and 372K user's listening habits. We characterize users' profiles: age, playcount, friends, gender and count
Externí odkaz:
http://arxiv.org/abs/1605.08486
We study sterile neutrinos in an extension of the standard model, based on the gauge group $SU(3)_C\otimes SU(3)_L\otimes SU(3)_R\otimes U(1)_N$, and use this model to illustrate how to apply cosmological limits to thermalized particles that decouple
Externí odkaz:
http://arxiv.org/abs/1509.02977