scholarly journals On the particle spectrum and the conformal window

2014 ◽  
Vol 2014 (12) ◽  
Author(s):  
M. P. Lombardo ◽  
K. Miura ◽  
T. J. Nunes da Silva ◽  
E. Pallante
Keyword(s):  
Particle Spectrum ◽  
Conformal Window

scholarly journals Approaching the conformal window: systematic study of the particle spectrum in SU(2) field theory with $N_f=$2,4 and 6.

2016 ◽  
Author(s):  
Sara Tähtinen ◽  
Alessandro Amato ◽  
Teemu Rantalaiho ◽  
Kari Rummukainen ◽  
Kimmo Tuominen
Keyword(s):  
Field Theory ◽  
Systematic Study ◽  
Particle Spectrum ◽  
Conformal Window

scholarly journals Effective Interactions of Relativistic Composite Particles in Unified Nonlinear Spinor-Field Models. I

1985 ◽  
Vol 40 (1) ◽  
pp. 14-28
Author(s):  
H. Stumpf
Keyword(s):  
Spinor Field ◽  
Bound States ◽  
Composite Particle ◽  
Composite Particles ◽  
Statistical Interpretation ◽  
Particle Spectrum ◽  
Nonlinear Spinor ◽  
Effective Interactions ◽  
Scattering States ◽  
Diagonal Part

Unified nonlinear spinor field models are selfregularizing quantum field theories in which all observable (elementary and non-elementary) particles are assumed to be bound states of fermionic preon fields. Due to their large masses the preons themselves are confined. In preceding papers a functional energy representation, the statistical interpretation and the dynamical equations were derived. In this paper the dynamics of composite particles is discussed. The composite particles are defined to be eigensolutions of the diagonal part of the energy representation. Corresponding calculations are in preparation, but in the present paper a suitable composite particle spectrum is assumed. It consists of preon-antipreon boson states and threepreon- fermion states with corresponding antifermions and contains bound states as well as preon scattering states. The state functional is expanded in terms of these composite particle states with inclusion of preon scattering states. The transformation of the functional energy representation of the spinor field into composite particle functional operators produces a hierarchy of effective interactions at the composite particle level, the leading terms of which are identical with the functional energy representation of a phenomenological boson-fermion coupling theory. This representation is valid as long as the processes are assumed to be below the energetic threshold for preon production or preon break-up reactions, respectively. From this it can be concluded that below the threshold the effective interactions of composite particles in a unified spinor field model lead to phenomenological coupling theories which depend in their properties on the bound state spectrum of the self-regularizing spinor theory.

scholarly journals BPS Quivers of Five-Dimensional SCFTs, Topological Strings and q-Painlevé Equations

2021 ◽  
Author(s):  
Giulio Bonelli ◽  
Fabrizio Del Monte ◽  
Alessandro Tanzini
Keyword(s):  
Topological String ◽  
Cluster Algebra ◽  
Painlevé Equations ◽  
Partition Functions ◽  
Quantum Field Theories ◽  
Particle Spectrum ◽  
Yang Mills ◽  
Painleve Equations ◽  
Rank One ◽  
Bilinear Equations

AbstractWe study the discrete flows generated by the symmetry group of the BPS quivers for Calabi–Yau geometries describing five-dimensional superconformal quantum field theories on a circle. These flows naturally describe the BPS particle spectrum of such theories and at the same time generate bilinear equations of q-difference type which, in the rank one case, are q-Painlevé equations. The solutions of these equations are shown to be given by grand canonical topological string partition functions which we identify with $$\tau $$ τ -functions of the cluster algebra associated to the quiver. We exemplify our construction in the case corresponding to five-dimensional SU(2) pure super Yang–Mills and $$N_f=2$$ N f = 2 on a circle.

GRASSMANN COORDINATES FOR PARTICLE CLASSIFICATION

1989 ◽  
Vol 04 (14) ◽  
pp. 1381-1387 ◽  
Author(s):  
R. DELBOURGO
Keyword(s):  
Particle Spectrum ◽  
Present Particle ◽  
Generation Problem ◽  
Particle Classification

We show that five complex anticommuting coordinates are sufficient to describe the present particle spectrum, including the possibility of understanding the generation problem.

Binding energy of nuclear matter from a physical particle spectrum

1975 ◽  
Vol 245 (3) ◽  
pp. 411-428 ◽  
Author(s):  
J.-P. Jeukenne ◽  
A. Lejeune ◽  
C. Mahaux
Keyword(s):  
Binding Energy ◽  
Nuclear Matter ◽  
Particle Spectrum ◽  
Physical Particle

scholarly journals $\beta $-delayed $\gamma $-proton Decay in $^{56}$Zn: Analysis of the Charged-particle Spectrum

2015 ◽  
Vol 46 (3) ◽  
pp. 709
Author(s):  
S.E.A. Orrigo ◽  
B. Rubio ◽  
Y. Fujita ◽  
B. Blank ◽  
W. Gelletly ◽  
...  
Keyword(s):  
Charged Particle ◽  
Proton Decay ◽  
Particle Spectrum ◽  
Beta Delayed

scholarly journals Alpha?Particles from the Reaction 7Li(p,g)8Be(a)4He

1960 ◽  
Vol 13 (2) ◽  
pp. 116 ◽  
Author(s):  
DS Gemmell
Keyword(s):  
Ground State ◽  
Alpha Particles ◽  
Particle Spectrum ◽  
Dispersion Formula

The OI:-particle spectrum from the reaction 7Li(p,y)8Be*(0I:)4He has been determined in coincidence with y-rays_ The results indicate that, apart from the broad 2� 9 MeV level, there are no additional levels between the ground state and 7 MeV with intensities greater than 3 per cent. of the 2 . 9 MeV level. It is shown that the shape of the 2 -9 MeV level can be fitted satisfactorily by a dispersion formula if a large value for the reduced width of the level is assumed.

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