Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Ferreira, Luiz F."'
We study the magnetic field effects on the quantum critical point (QCP) in the holographic Weyl semimetal model. We show that it increases quadratically with the magnetic field for weak field and linear with the magnetic field for strong field. Our f
Externí odkaz:
http://arxiv.org/abs/2303.11992
Publikováno v:
Phys.Lett.B 847 (2023) 138265
The configuration entropy (CE) provides a measure of the stability of physical systems that are spatially localized. An increase in the CE is associated with an increase in the instability of the system. In this work we apply a recently developed hol
Externí odkaz:
http://arxiv.org/abs/2301.01322
Heavy vector mesons produced in a heavy ion collision are important sources of information about the quark gluon plasma (QGP). For instance, the fraction of bottomonium states observed in such a collision is altered by the dissociation effect caused
Externí odkaz:
http://arxiv.org/abs/2110.04560
Autor:
Ferreira, Luiz F., da Rocha, Roldao
Publikováno v:
Phys. Rev. D 101, 106002 (2020)
Families of $J^P=1/2+$ nucleons (N(939), N(1440), N(1710), N(1880), N(2100), N(2300)) and $J^P=3/2-$ nucleons (N(1520), N(1700), N(1875) and N(2120)) are scrutinized from the point of view of the configurational entropy (CE). The mass spectra of high
Externí odkaz:
http://arxiv.org/abs/2004.04551
Autor:
Ferreira, Luiz F., da Rocha, Roldao
Publikováno v:
Eur. Phys. J. C 80 (2020) 375
The Kaluza-Klein tower of higher spin-$S$ tensor meson resonances is here scrutinized in the AdS/QCD hard wall model, encompassing the already established resonances $\rho(770)$, $f_2(1270)$, $\omega_3(1670)$, $f_4(2050)$, $\rho_5(2350)$, $f_6(2510)$
Externí odkaz:
http://arxiv.org/abs/1907.11809
Autor:
Braga, Nelson R. F., Ferreira, Luiz F.
Heavy vector mesons detected after a heavy ion collision are important sources of information about the quark gluon plasma. The fraction of such particles that survive the plasma phase and reach the detectors is related to the dissociation degree ins
Externí odkaz:
http://arxiv.org/abs/1905.11309
Autor:
Ferreira, Luiz F., da Rocha, R.
Publikováno v:
Phys. Rev. D 99, 086001 (2019)
The two flavour AdS/QCD, with chiral and gluon condensates, sets in the description of the pion family and its mass spectra. Using gravity-dilaton-gluon backgrounds, entropic Regge-like trajectories for the pion family are then derived. They relate t
Externí odkaz:
http://arxiv.org/abs/1902.04534
Autor:
Braga, Nelson R. F., Ferreira, Luiz F.
Recent investigations show that the thermal spectral function of heavy $ {b \bar b } $ and $ {c \bar c} $ vector mesons can be described using holography. These studies consider a bottom up model that captures the heavy flavour spectroscopy of masses
Externí odkaz:
http://arxiv.org/abs/1810.11872
Publikováno v:
Phys. Lett. B 787 (2018) 16
We study the dissociation of heavy vector mesons in a thermal medium from the point of view of the configurational entropy. Bottomonium and charmonium vector mesons in a plasma are represented using a holographic AdS/QCD model. The quasinormal modes,
Externí odkaz:
http://arxiv.org/abs/1808.10499
Autor:
Braga, Nelson R. F., Ferreira, Luiz F.
The fraction of heavy vector mesons detected after a heavy ion collision provides information about the possible formation of a plasma state. An interesting framework for estimating the degree of dissociation of heavy mesons in a plasma is the hologr
Externí odkaz:
http://arxiv.org/abs/1802.02084