scholarly journals PULSARS: GIGANTIC NUCLEI

2011 ◽  
Vol 20 (supp01) ◽  
pp. 149-157 ◽  
Author(s):  
RENXIN XU
Keyword(s):  
Strong Interaction ◽  
Mathematical Institute ◽  
Energy Scale ◽  
Low Energy ◽  
Compact Stars ◽  
Yang Mills ◽  
Quantum Chromo Dynamics ◽  
Real Nature ◽  
Perturbative Quantum ◽  
Points Of View

What is the real nature of pulsars? This is essentially a question of the fundamental strong interaction between quarks at low-energy scale and hence of the non-perturbative quantum chromo-dynamics, the solution of which would certainly be meaningful for us to understand one of the seven millennium prize problems (i.e., "Yang-Mills Theory") named by the Clay Mathematical Institute. After a historical note, it is argued here that a pulsar is very similar to an extremely big nucleus, but is a little bit different from the gigantic nucleus speculated 80 years ago by L. Landau. The paper demonstrates the similarity between pulsars and gigantic nuclei from both points of view: the different manifestations of compact stars and the general behavior of the strong interaction.

QUARK-CLUSTER STARS: THE STRUCTURE

2013 ◽  
Vol 23 ◽  
pp. 213-222
Author(s):  
XIAOYU LAI ◽  
RENXIN XU
Keyword(s):  
Condensed Matter ◽  
Realistic Model ◽  
State Equation ◽  
Compact Stars ◽  
Final Solution ◽  
Strange Quarks ◽  
Quantum Chromo Dynamics ◽  
Quark Stars ◽  
Perturbative Quantum ◽  
Points Of View

The nature of pulsar-like compact stars is still in controversy although the first pulsar was found more than 40 years ago. Generally speaking, conventional neutron stars and non-mainstream quark stars are two types of models to describe the inner structure of pulsars, with the former composed mainly of hadrons and the latter of a peculiar kind of matter whose state equation should be understood in the level of quarks rather than hadrons. To construct a more realistic model from both theoretical and observational points of view, we conjecture that pulsars could be "quark-cluster stars" which are composed of quark-clusters with almost equal numbers of up, down and strange quarks. Clustering quark matter could be the result of strong coupling between quarks inside realistic compact stars. The lightest quark clusters could be of H-dibaryons, while quark clusters could also be heavier with more quarks. Being essentially related to the non-perturbative quantum-chromo dynamics (QCD), the state of supra-nuclear condensed matter is really difficult to obtain strictly by only theoretical QCD-calculations, and we expect, nevertheless, that astrophysical observations could help us to have a final solution.

scholarly journals The gluon condensate in an effective SU(2) Yang–Mills theory

2019 ◽  
Vol 34 (02) ◽  
pp. 1950018
Author(s):  
A. N. Efremov
Keyword(s):  
Renormalization Group ◽  
Scalar Field ◽  
Gluon Condensate ◽  
Energy Scale ◽  
Low Energy ◽  
Effective Theory ◽  
Abelian Gauge ◽  
Yang Mills ◽  
Mexican Hat ◽  
Text Model

We make progress towards a derivation of a low energy effective theory for SU(2) Yang–Mills theory. This low energy action is computed to 1-loop using the renormalization group technique, taking proper care of the Slavnov–Taylor identities in the Maximal Abelian Gauge. After that, we perform the Spin-Charge decomposition in a way proposed by Faddeev and Niemi. The resulting action describes a pair of nonlinear O(3) and [Formula: see text]-models interacting with a scalar field. The potential of the scalar field is a Mexican hat and the location of the minima sets the energy scale of solitonic configurations of the [Formula: see text]-model fields whose excitations correspond to glueball states.

scholarly journals On the low-energy effective action of N = 2 supersymmetric Yang-Mills theory

1999 ◽  
Vol 537 (1-3) ◽  
pp. 161-183 ◽  
Author(s):  
M. Chaichian ◽  
W.F. Chen ◽  
C. Montonen
Keyword(s):  
Effective Action ◽  
Low Energy ◽  
Yang Mills

scholarly journals Low-energy scale of the periodic Anderson model

2000 ◽  
Vol 61 (19) ◽  
pp. 12799-12809 ◽  
Author(s):  
Th. Pruschke ◽  
R. Bulla ◽  
M. Jarrell
Keyword(s):  
Anderson Model ◽  
Energy Scale ◽  
Low Energy ◽  
Periodic Anderson Model

scholarly journals PROJECTIVE SUPERSPACE AS A DOUBLE-PUNCTURED HARMONIC SUPERSPACE

1999 ◽  
Vol 14 (11) ◽  
pp. 1737-1757 ◽  
Author(s):  
SERGEI M. KUZENKO
Keyword(s):  
Effective Action ◽  
Low Energy ◽  
Harmonic Superspace ◽  
Yang Mills ◽  
Projective Superspace ◽  
The Relationship

We analyze the relationship between the N=2 harmonic and projective superspaces, which are the only approaches developed to describe general N=2 super-Yang–Mills theories in terms of off-shell supermultiplets with conventional supersymmetry. The structure of low energy hypermultiplet effective action is briefly discussed.

scholarly journals THE HAGEDORN TRANSITION AND THE MATRIX MODEL FOR STRINGS

1998 ◽  
Vol 13 (26) ◽  
pp. 2085-2094 ◽  
Author(s):  
B. SATHIAPALAN
Keyword(s):  
Matrix Model ◽  
Light Cone ◽  
Degrees Of Freedom ◽  
Low Energy ◽  
Matrix Formalism ◽  
Yang Mills ◽  
Large N ◽  
The Matrix ◽  
The Continuum ◽  
String Worldsheet

We use the matrix formalism to investigate what happens to strings above the Hagedorn temperature. We show that is not a limiting temperature but a temperature at which the continuum string picture breaks down. We study a collection of N D-0-branes arranged to form a string having N units of light-cone momentum. We find that at high temperatures the favored phase is one where the string worldsheet has disappeared and the low-energy degrees of freedom consists of N2 massless particles ("gluons"). The nature of the transition is very similar to the deconfinement transition in large-N Yang–Mills theories.

scholarly journals EXPLICITLY BROKEN LEPTON NUMBER AT LOW ENERGY IN THE HIGGS TRIPLET MODEL

2006 ◽  
Vol 21 (12) ◽  
pp. 971-977 ◽  
Author(s):  
C. A. DE S. PIRES
Keyword(s):  
Mass Spectrum ◽  
Energy Scale ◽  
Lepton Number ◽  
Low Energy ◽  
Triplet Model ◽  
Scalar Sector ◽  
Higgs Triplet Model

We assume that lepton number is explicitly broken at low energy scale (M) in the framework of the Higgs triplet (Δ) model. The scalar sector of the model is developed considering the particular assumption M = vΔ ≈ eV . We show that such assumption infers a particular mass spectrum for the scalars that compose the triplet and cause a decoupling of these scalars from those that compose the standard scalar doublet.

scholarly journals Experimental and theoretical premises of new stable hadron existence

2017 ◽  
Vol 32 (32) ◽  
pp. 1750188 ◽  
Author(s):  
Yu. N. Bazhutov ◽  
G. M. Vereshkov ◽  
V. I. Kuksa
Keyword(s):  
Cosmic Rays ◽  
Standard Model ◽  
Strong Interaction ◽  
Large Distance ◽  
Interaction Model ◽  
New Physics ◽  
Low Energy ◽  
Hadron Interaction ◽  
Energy Hadron

The hypothesis of the new stable heavy hadrons existence is proposed which follows from Cosmic rays physics indirect data. It is shown that the hypothesis does not contradict Cosmochemical data, Cosmological test and the restrictions on New Physics effects. The conclusion is based on the most important property of the new hadrons — repulsion strong interaction with nucleons at large distance asymptote. This effect is substantiated theoretically in the framework of the low-energy hadron interaction model. Some extensions of Standard Model is considered where new stable and metastable quarks appear.

scholarly journals Low-energy scale excitations in the spectral function of organic monolayer systems

2012 ◽  
Vol 85 (16) ◽  
Author(s):  
J. Ziroff ◽  
S. Hame ◽  
M. Kochler ◽  
A. Bendounan ◽  
A. Schöll ◽  
...  
Keyword(s):  
Spectral Function ◽  
Energy Scale ◽  
Low Energy ◽  
Organic Monolayer

scholarly journals DUALITY IN SUPERSYMMETRIC YANG–MILLS AND THE QUANTUM HALL EFFECT

2006 ◽  
Vol 21 (20) ◽  
pp. 1567-1585
Author(s):  
BRIAN P. DOLAN
Keyword(s):  
Gauge Theory ◽  
Hall Effect ◽  
Experimental Evidence ◽  
Quantum Hall Effect ◽  
Modular Group ◽  
Quantum Hall ◽  
Low Energy ◽  
Kinetic Term ◽  
Yang Mills ◽  
Topological Parameter

The evidence for the parallel rôles played by the modular group in [Formula: see text] supersymmetric Yang–Mills in (3+1) dimensions and the quantum Hall effect in (2+1) dimensions is reviewed. In both cases a subgroup of the full modular group acts as a map between different low energy phases of the theory, parametrised by a complex parameter in the upper-half-complex plane whose real part is a topological parameter and whose imaginary part is the coupling associated the kinetic term of the effective U(1) gauge theory. In the case of the quantum Hall effect experimental evidence in favour of the modular action is also reviewed.

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