90 citations · 1.1k across the 81 of their papers we have counts for
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Infrared Subtleties and Chiral Vertices at NLO: An Implicit Regularization Analysis
Ricardo J. C. Rosado, Adriano Cherchiglia, Marcos Sampaio +1
We employ implicit regularization (IReg) in quark-antiquark decays of the Z, or of a scalar (CP-even or odd) boson at NLO, and compare with dimensional schemes to reveal subtleties…
Higgs boson decay into gluons in a 4D regularization: IR cancellation without evanescent fields to NLO
Ana Pereira, Adriano Cherchiglia, Marcos Sampaio +1
Higgs decay using an effective Higgs-Yang-Mills interaction in terms of a dimension five operator as well as usual QCD interactions is revisited in the context of Implicit Regulari…
Gauge-covariant diagonalization of - mixing and the resolution of a low energy theorem
A. A. Osipov, M. M. Khalifa, B. Hiller
Using a recently proposed gauge covariant diagonalization of -mixing we show that the low energy theorem of current algebra, relating the anomalous form…
Two-loop renormalisation of gauge theories in Implicit Regularisation and connections to dimensional methods
A. Cherchiglia, D. C. Arias-Perdomo, A. R. Vieira +2
We compute the two-loop -function of scalar and spinorial quantum electrodynamics as well as pure Yang-Mills and quantum chromodynamics using the background field method in a fu…
Low-energy theorem for : surface terms against -mixing
A. A. Osipov, M. M. Khalifa, B. Hiller
We reconsider the contribution due to -mixing to the anomalous amplitude from the standpoint of the low-energy theorem , which relates the…
Quark mass effects in the thermodynamical properties of an extended (P)NJL model
J. Moreira, J. Morais, B. Hiller +2
We analyze the thermodynamical properties of a system of strongly interacting particles at vanishing quark chemical potential in the framework of a recently developed extension of…
Gauge covariant approach to the electroweak interactions of mesons in the Nambu-Jona-Lasinio model with spin-1 states
A. A. Osipov, B. Hiller, P. M. Zhang
An extended Nambu-Jona-Lasinio (NJL) model with chiral group and spin-0 and spin-1 four quark interactions is used to develop the gauge covariant approach to the…
Hadronic electroweak current and mixing
A. A. Osipov, B. Hiller, P. M. Zhang
It is found that in presence of electroweak interactions the gauge covariant diagonalization of the axial-vector -- pseudoscalar mixing in the effective meson Lagrangian leads to a…
Thermodynamical properties of strongly interacting matter in a model with explicit chiral symmetry breaking interactions
J. Moreira, J. Morais, B. Hiller +2
We analyse the effects of the light and strange current quark masses on the phase diagram of QCD at finite temperature and vanishing baryonic chemical potential, computing the spee…
The effects of explicit chiral symmetry breaking multiquark interactions on the spin 0 and 1 meson nonets: the ruling of the vector mesons
Jorge Morais, Brigitte Hiller, Alexander A. Osipov
We have recently extended the scalar-pseudoscalar sector of a generalized NJL Lagrangian that includes all NLO non derivative interactions in Nc counting (including explicit symmet…
Strongly Interacting Matter Phase Diagram in the presence of Magnetic Fields in an Extended Effective Lagrangian Approach with Explicit Chiral Symmetry Breaking Interactions
J. Moreira, J. Morais, B. Hiller +2
Extensions of the NJL model which go beyond the original 4-quark interaction, which drives the dynamical mass generation, have proven to be quite successful in describing low energ…
Spin 1 low lying meson spectra and the subtle link to the spin 0 mesons
Jorge Morais, Brigitte Hiller, Alexander A. Osipov
An NJL-type three-flavor quark model with a complete set of explicit chiral symmetry breaking terms is extended to include vector and axial vector effective interaction terms. The…
A general framework to diagonalize vector--scalar and axial-vector--pseudoscalar transitions in the effective meson Lagrangian
Jorge Morais, Brigitte Hiller, Alexander A. Osipov
A new mathematical framework for the diagonalization of the nondiagonal vector--scalar and axial-vector--pseudoscalar mixing in the effective meson Lagrangian is described. This pr…
Masses of the lowest spin-0 and spin-1 meson nonets: explicit symmetry breaking effects
Jorge Morais, Brigitte Hiller, Alexander A. Osipov
We extend a known multi-quark three-flavor Lagrangian of the Nambu-Jona-Lasinio type, which includes a set of effective interactions proportional to the current quark masses, to in…
Momentum correlations of scattered particles in quantum field theory: one-loop entanglement generation
Ricardo Faleiro, Rafael Pavão, Helder Alexander +3
We compute the entanglement entropy variation between initial (separable or entangled in the momenta) and final states in an elastic scattering of a bipartite system compose…
Light quark mass differences in the system
A. A. Osipov, B. Hiller, A. H. Blin +1
A generalized 3 flavor Nambu-Jona--Lasinio Lagrangian including the explicit chiral symmetry breaking interactions which contribute at the same order in the large counting…
The mixing in a generalized multi-quark interaction scheme
Alexander A. Osipov, Brigitte Hiller, Alex H. Blin
We investigate the isospin symmetry breaking effects within a recently derived Nambu-Jona-Lasinio related model by fitting the measured pseudoscalar meson masses and weak decay cou…
Guises and Disguises of Quadratic Divergences
A. L. Cherchiglia, A. R. Vieira, Brigitte Hiller +2
In this contribution, we present a new perspective on the control of quadratic divergences in quantum field theory, in general, and in the Higgs naturalness problem, in particular.…
Effective multi-quark interactions with explicit breaking of chiral symmetry
A. A. Osipov, B. Hiller, A. H. Blin
In a long distance Lagrangian approach to the low lying meson phenomenology we present and discuss the most general spin zero multi-quark interaction vertices of non-derivative typ…
Susceptibilities in the PNJL model with 8q interactions and comparison with lQCD
João Moreira, Brigitte Hiller, Alexander Osipov +1
We present some results pertaining quantities which are regarded as good indicators of the pseudo-critical temperatures for the deconfinement and partial chiral restoration transit…
Observables in the 3 Flavor PNJL Model and their Relation to Eight Quark Interactions
B. Hiller, J. Moreira, A. A. Osipov +1
Several relevant thermodynamic observables obtained within the (2+1) flavor and spin zero NJL and PNJL models with inclusion of the 't Hooft determinant and interactions are c…
Naturalness and theoretical constraints on the Higgs boson mass
A. R. Vieira, Brigitte Hiller, M. C. Nemes +1
Arbitrary regularization dependent parameters in Quantum Field Theory are usually fixed on symmetry or phenomenology grounds. We verify that the quadratically divergent behavior re…
Extended NJL model with eight-quark interactions
A. A. Osipov, B. Hiller, A. H. Blin +1
We present the results obtained in the three-flavour () Nambu--Jona-Lasinio model which is extended by the breaking six-quark 't Hooft interaction and eight-quark i…
Pion quadrupole polarizabilities in the Nambu--Jona-Lasinio model
Brigitte Hiller, Wojciech Broniowski, Alexander A. Osipov +1
We present the results for the pion electromagnetic quadrupole polarizabilities, calculated within the Nambu--Jona-Lasinio model. We obtain the sign and magnitude in agreement with…