scholarly journals SPLITTING OF MACROSCOPIC FUNDAMENTAL STRINGS IN FLAT SPACE AND HOLOGRAPHIC HADRON DECAYS

2007 ◽  
Vol 22 (15) ◽  
pp. 1057-1073 ◽  
Author(s):  
F. BIGAZZI ◽  
A. L. COTRONE ◽  
L. MARTUCCI ◽  
W. TROOST
Keyword(s):  
Gauge Theory ◽  
Flat Space ◽  
Heavy Quarks ◽  
Decay Rates ◽  
Fundamental String ◽  
Exclusive Decay ◽  
Large Spin

In this review we present the calculation of the splitting rate in flat space of a macroscopic fundamental string either intersecting at a generic angle a Dp-brane or lying on it. The result is then applied, in the context of the string/gauge theory correspondence, to the study of exclusive decay rates of large spin mesons into mesons. As examples, we discuss the cases of [Formula: see text] SYM with a small number of flavors, and of QCD-like theories in the quenched approximation. In the latter context, explicit analytic formulas are given for decay rates of mesons formed either by heavy quarks or by massless quarks.

scholarly journals On the quantization of Seiberg-Witten geometry

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Nathan Haouzi ◽  
Jihwan Oh
Keyword(s):  
Gauge Theory ◽  
String Theory ◽  
Partition Function ◽  
Flat Space ◽  
Matter Content ◽  
Gauge Groups ◽  
Space Limit ◽  
Two Parameters ◽  
Double Quantization ◽  
Quantization Parameters

Abstract We propose a double quantization of four-dimensional $$ \mathcal{N} $$ N = 2 Seiberg-Witten geometry, for all classical gauge groups and a wide variety of matter content. This can be understood as a set of certain non-perturbative Schwinger-Dyson identities, following the program initiated by Nekrasov [1]. The construction relies on the computation of the instanton partition function of the gauge theory on the so-called Ω-background on ℝ4, in the presence of half-BPS codimension 4 defects. The two quantization parameters are identified as the two parameters of this background. The Seiberg-Witten curve of each theory is recovered in the flat space limit. Whenever possible, we motivate our construction from type IIA string theory.

Comparison of exclusive decay rates forb→uandb→ctransitions

1987 ◽  
Vol 36 (1) ◽  
pp. 130-136 ◽  
Author(s):  
Shmuel Nussinov ◽  
Werner Wetzel
Keyword(s):  
Decay Rates ◽  
Exclusive Decay

scholarly journals Localized Kaluza-Klein 6-brane

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Tetsuji Kimura ◽  
Shin Sasaki ◽  
Kenta Shiozawa
Keyword(s):  
Gauge Theory ◽  
Sigma Model ◽  
Three Dimensional ◽  
Linear Sigma Model ◽  
Physical Origin ◽  
Fundamental String ◽  
Extended Space ◽  
Instanton Effect ◽  
M Theory ◽  
Kaluza Klein

Abstract We study the membrane wrapping mode corrections to the Kaluza-Klein (KK) 6-brane in eleven dimensions. We examine the localized KK6-brane in the extended space in E7(7) exceptional field theory. In order to discuss the physical origin of the localization in the extended space, we consider a probe M2-brane in eleven dimensions. We show that a three-dimensional $$ \mathcal{N} $$ N = 4 gauge theory is naturally interpreted as a membrane generalization of the two-dimensional $$ \mathcal{N} $$ N = (4, 4) gauged linear sigma model for the fundamental string. We point out that the vector field in the $$ \mathcal{N} $$ N = 4 model is identified as a dual coordinate of the KK6-brane geometry. We find that the BPS vortex in the gauge theory gives rise to the violation of the isometry along the dual direction. We then show that the vortex corrections are regarded as an instanton effect in M-theory induced by the probe M2-brane wrapping around the M-circle.

scholarly journals Flat space holography in spin-2 extended dilaton-gravity

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Hamid Afshar ◽  
Erfan Esmaeili ◽  
H. R. Safari
Keyword(s):  
Black Holes ◽  
Gauge Theory ◽  
Central Element ◽  
Flat Space ◽  
Two Dimensional ◽  
Dilaton Gravity ◽  
Asymptotic Symmetry ◽  
Coadjoint Action ◽  
Flat Spacetime ◽  
Thermodynamics Of Black Holes

Abstract We present an interacting spin-2 gauge theory coupled to the two-dimensional dilaton-gravity in flat spacetime. The asymptotic symmetry group is enhanced to the central extension of Diff(S1)⋉C∞(S1)⋉Vec(S1) when the central element of the Heisenberg subgroup is zero (vanishing U(1) level). Using the BF-formulation of the model we derive the corresponding boundary coadjoint action which is the spin-2 extension of the warped Schwarzian theory at vanishing U(1) level. We also discuss the thermodynamics of black holes in this model.

scholarly journals Large-spin asymptotics of Euclidean LQG flat-space wavefunctions

2011 ◽  
Vol 15 (3) ◽  
pp. 801-847
Author(s):  
Aleksandar Miković ◽  
Marko Vojinović
Keyword(s):  
Flat Space ◽  
Large Spin

scholarly journals LORENTZ GAUGE THEORY AND SPINOR INTERACTION

2008 ◽  
Vol 23 (08) ◽  
pp. 1282-1285 ◽  
Author(s):  
NAKIA CARLEVARO ◽  
ORCHIDEA MARIA LECIAN ◽  
GIOVANNI MONTANI
Keyword(s):  
Gauge Theory ◽  
Gauge Field ◽  
Lorentz Group ◽  
Flat Space ◽  
Stationary Solutions ◽  
Space Time ◽  
Pauli Equation ◽  
Relativistic Limit ◽  
Curved Space

A gauge theory of the Lorentz group, based on the different behavior of spinors and vectors under local transformations, is formulated in a flat space-time and the role of the torsion field within the generalization to curved space-time is briefly discussed. The spinor interaction with the new gauge field is then analyzed assuming the time gauge and stationary solutions, in the non-relativistic limit, are treated to generalize the Pauli equation.

scholarly journals DECAY OF THE MAXWELL FIELD ON THE SCHWARZSCHILD MANIFOLD

2008 ◽  
Vol 05 (04) ◽  
pp. 807-856 ◽  
Author(s):  
PIETER BLUE
Keyword(s):  
Event Horizon ◽  
Flat Space ◽  
Decay Rates ◽  
Maxwell Field ◽  
Radial Coordinate ◽  
Field Methods ◽  
Exterior Region ◽  
Time Coordinate ◽  
Bounded Interval ◽  
Harmonic Decomposition

We study solutions of the decoupled Maxwell equations in the exterior region of a Schwarzschild black hole. In stationary regions, where the Schwarzschild radial coordinate takes values in a bounded interval away from the event horizon, we obtain decay for all components of the Maxwell field at a rate which is bounded by the inverse of the standard time coordinate. We use vector field methods and no not require a spherical harmonic decomposition. In outgoing regions, where the Regge–Wheeler tortoise coordinate grows at least linearly with the time coordinate, we obtain decay rates for each of the null components. These rates are similar to the rates in flat space but weaker. Along the event horizon and in ingoing regions, where the Regge–Wheeler coordinate is negative and the outgoing, Eddington–Finkelstein null-coordinate is positive, all components (normalized with respect to an ingoing null basis) decay at a rate which is bounded by the inverse of the outgoing null coordinate.

Anomalous mass dependence of glueball exclusive decay rates

1983 ◽  
Vol 214 (1) ◽  
pp. 153-166 ◽  
Author(s):  
Bernard Pire ◽  
John P. Ralston
Keyword(s):  
Decay Rates ◽  
Mass Dependence ◽  
Exclusive Decay

D3/D5 SYSTEM AND HOLOGRAPHIC INTERFACE CFT

2013 ◽  
Vol 21 ◽  
pp. 159-160
Author(s):  
KOICHI NAGASAKI ◽  
SATOSHI YAMAGUCHI
Keyword(s):  
Gauge Theory ◽  
Potential Energy ◽  
Test Particle ◽  
Wilson Loop ◽  
Gauge Theories ◽  
The Other ◽  
Expectation Value ◽  
Fundamental String ◽  
Theory Result ◽  
Supersymmetric Gauge

We consider two [Formula: see text] supersymmetric gauge theories connected by an interface and the gravity dual of this system. This interface is expressed by a fuzzy funnel solution of Nahmfs equation in the gauge theory side. The gravity dual is a probe D5-brane in AdS5 × S5. The potential energy between this interface and a test particle is calculated in both the gauge theory side and the gravity side by the expectation value of a Wilson loop. In the gauge theory it is evaluated by just substituting the classical solution to the Wilson loop. On the other hand it is done by the on-shell action of the fundamental string stretched between the AdS boundary and the D5-brane in the gravity. We show the gauge theory result and the gravity one agree with each other.

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