scholarly journals Masses of Axial-Vector Resonances in a Linear Sigma Model with N[sub f] = 3

2011 ◽  
Author(s):  
Denis Parganlija ◽  
Francesco Giacosa ◽  
Péter Kovács ◽  
György Wolf
Keyword(s):  
Sigma Model ◽  
Axial Vector ◽  
Linear Sigma Model

scholarly journals Compact Star Properties from an Extended Linear Sigma Model

Universe ◽  
2019 ◽  
Vol 5 (7) ◽  
pp. 174
Author(s):  
János Takátsy ◽  
Péter Kovács ◽  
Zsolt Szép ◽  
György Wolf
Keyword(s):  
Equation Of State ◽  
Quark Matter ◽  
Sigma Model ◽  
Equations Of State ◽  
Compact Star ◽  
Axial Vector ◽  
Compact Stars ◽  
Linear Sigma Model ◽  
Axial Vector Meson ◽  
Effective Models

The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations of compact stars. Using the equation of state given by the (axial-)vector meson extended linear sigma model, we determine the mass–radius relation and study whether these restrictions are satisfied under the assumption that most of the star is filled with quark matter. We also compare the mass–radius sequence with those given by the equations of state of somewhat simpler models.

scholarly journals Meson vacuum phenomenology in a three-flavor linear sigma model with (axial-)vector mesons

2013 ◽  
Vol 87 (1) ◽  
Author(s):  
D. Parganlija ◽  
P. Kovács ◽  
Gy. Wolf ◽  
F. Giacosa ◽  
D. H. Rischke
Keyword(s):  
Sigma Model ◽  
Axial Vector ◽  
Linear Sigma Model ◽  
Vector Mesons

scholarly journals A LINEAR SIGMA MODEL WITH THREE FLAVORS AND VECTOR AND AXIAL-VECTOR MESONS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 607-609 ◽  
Author(s):  
DENIS PARGANLIJA ◽  
FRANCESCO GIACOSA ◽  
DIRK H. RISCHKE ◽  
PÉTER KOVÁCS ◽  
GYŐRGY WOLF
Keyword(s):  
Degrees Of Freedom ◽  
Sigma Model ◽  
Scalar Meson ◽  
Axial Vector ◽  
Linear Sigma Model ◽  
Vector Mesons ◽  
Preliminary Results

We outline the extension of the globally chirally invariant Nf = 2 linear sigma model with vector and axial-vector degrees of freedom to Nf = 3. We present preliminary results concerning the scalar meson masses.

scholarly journals Scalar mesons in a linear sigma model with (axial-)vector mesons

2013 ◽  
Author(s):  
D. Parganlija ◽  
P. Kovács ◽  
Gy. Wolf ◽  
F. Giacosa ◽  
D. H. Rischke
Keyword(s):  
Sigma Model ◽  
Axial Vector ◽  
Linear Sigma Model ◽  
Vector Mesons ◽  
Scalar Mesons

scholarly journals Long way to Ricci flatness

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Jin Chen ◽  
Chao-Hsiang Sheu ◽  
Mikhail Shifman ◽  
Gianni Tallarita ◽  
Alexei Yung
Keyword(s):  
Sigma Model ◽  
Ultra Violet ◽  
The Other ◽  
Target Space ◽  
Linear Sigma Model ◽  
Close Relative ◽  
Two Dimensional ◽  
World Sheet ◽  
Ricci Flat ◽  
The World

Abstract We study two-dimensional weighted $$ \mathcal{N} $$ N = (2) supersymmetric ℂℙ models with the goal of exploring their infrared (IR) limit. 𝕎ℂℙ(N,$$ \tilde{N} $$ N ˜ ) are simplified versions of world-sheet theories on non-Abelian strings in four-dimensional $$ \mathcal{N} $$ N = 2 QCD. In the gauged linear sigma model (GLSM) formulation, 𝕎ℂℙ(N,$$ \tilde{N} $$ N ˜ ) has N charges +1 and $$ \tilde{N} $$ N ˜ charges −1 fields. As well-known, at $$ \tilde{N} $$ N ˜ = N this GLSM is conformal. Its target space is believed to be a non-compact Calabi-Yau manifold. We mostly focus on the N = 2 case, then the Calabi-Yau space is a conifold. On the other hand, in the non-linear sigma model (NLSM) formulation the model has ultra-violet logarithms and does not look conformal. Moreover, its metric is not Ricci-flat. We address this puzzle by studying the renormalization group (RG) flow of the model. We show that the metric of NLSM becomes Ricci-flat in the IR. Moreover, it tends to the known metric of the resolved conifold. We also study a close relative of the 𝕎ℂℙ model — the so called zn model — which in actuality represents the world sheet theory on a non-Abelian semilocal string and show that this zn model has similar RG properties.

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