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Many-Quark Interactions: Large-N Scaling and Contribution to Baryon Masses
31 mai 2022,
- CeREF Technique
,
- Article scientifique
Article scientifique
Starting from an effective Hamiltonian modeling, of a baryon made of N identical quarks in
the large-N approach of QCD, we obtain analytical formulas, allowing to estimate the contributions
of multiquark interactions to the baryon mass. The cases of vanishing (mass spectrum) and nonvanishing
(baryon melting) temperatures are treated.
Relevance of glueball bound states in the Yang-Mills plasma within a many-body T-matrix approach
26 juillet 2012,
- HE Louvain en Hainaut
,
- Article scientifique
Article scientifique
The strongly coupled phase of Yang-Mills plasma with gauge group SU(3) is studied in a Tmatrix
approach. The existence of lowest-lying glueballs, interpreted as bound states of two
transverse gluons (quasi-particles in a many-body setup), is analyzed in a non-perturbative scattering
formalism with the input of lattice-QCD static potentials. The relevance of the singlet and
the (colored) octet ...
The SUSY Yang Mills plasma in a T-matrix approach
12 août 2015,
- HE Louvain en Hainaut
,
- Article scientifique
Article scientifique
In this paper, the thermodynamic properties of N = 1 supersymmetric Yang–Mills
theory with an arbitrary gauge group are investigated. In the confined range, we show
that identifying the bound state spectrum with a Hagedorn one coming from noncritical
closed superstring theory leads to a prediction for the value of the deconfining temperature
Tc that agrees with recent lattice data. The deconfined ...
Two- and three-body calculations within the dominantly orbital state method
14 mai 2013,
- HE Louvain en Hainaut
,
- Article scientifique
Article scientifique
The dominantly orbital state method allows a semiclassical description of quantum systems. At the origin, it was developed for two-body relativistic systems. Here, the method is extended to treat two-body Hamiltonians and systems with three identical particles, in D≥2 dimensions, with arbitrary kinetic energy and potential. This method is very easy to implement and can be used in a large variety of ...
Thermodynamics of the quark-gluon plasma within a T-matrix approach
24 juin 2015,
- HE Louvain en Hainaut
,
- Article scientifique
Article scientifique
The strongly coupled phase of the quark-gluon plasma (QGP) is studied here by resorting to a T -matrix
formulation in which the medium is seen as a nonideal gas of quasiparticles (quarks, antiquarks, and gluons)
interacting nonpertubatively. In the temperature range under study, (1–5)Tc, where Tc is the temperature of
deconfinement, the interactions are expected to be strong enough to generate ...
Meson spectrum in SU(N) gauge theories with quarks in higher representations: A check of Casimir scaling hypothesis
01 juin 2020,
- CeREF Technique
,
- Article scientifique
Article scientifique
Gauge theories with gauge group and quarks belonging to arbitrary representations of SU(N)
form a rich landscape of QCD-like theories, whose study can shed new light on the properties of confinement. Four cases are particularly worth of interest: quarks in the fundamental representation, quarks in the 2-indice (anti)symmetric representation and quarks in the adjoint representation. The last three ...