scholarly journals Particle spectrum created through bubble nucleation and quantum field theory in the Milne universe

1995 ◽  
Vol 51 (6) ◽  
pp. 2968-2978 ◽  
Author(s):  
Kazuhiro Yamamoto ◽  
Takahiro Tanaka ◽  
Misao Sasaki
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Bubble Nucleation ◽  
Particle Spectrum ◽  
Quantum Field

CONSISTENT HIGHER DERIVATIVE QUANTUM FIELD THEORY: A MODEL WITHOUT TACHYONS AND GHOSTS

1996 ◽  
Vol 11 (10) ◽  
pp. 775-783 ◽  
Author(s):  
A. DE SOUZA DUTRA ◽  
C.P. NATIVIDADE
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Gauge Theory ◽  
Particle Spectrum ◽  
Quantum Field ◽  
Higher Derivative

We present a higher derivative gauge theory in (2 + 1) dimensions which can have its parameters suitably tuned in order to become a consistent quantum field theory, in the sense that both tachyons and ghosts are absent from the particle spectrum of the theory.

Particle Spectrum by Semi-classical Methods

2020 ◽  
pp. 882-912
Author(s):  
Giuseppe Mussardo
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Asymptotic Behavior ◽  
Bound States ◽  
Lagrangian Density ◽  
Mass Formula ◽  
Classical Method ◽  
Particle Spectrum ◽  
Quantum Field ◽  
Sine Gordon Model

Chapter 23 discusses the setting of a semi-classical method—based on the Lagrangian density of the model, irrespective of whether or not it describes an integrable system—to address the computation of the particle spectrum of bound states in quantum field theory with a set of degenerate vacua connected by kink excitations. It begins by investigating kinks and anti-kinks and a semi-classical formula for the kink matrix elements, as well as asymptotic behavior. It then goes on to cover such topics as universal mass formula, symmetric wells, asymmetric wells and the double Sine–Gordon model, a benchmark of the semi-classical method.

A Review of Conformal Field Theory in 2D

2014 ◽  
Vol 6 (2) ◽  
pp. 1079-1105
Author(s):  
Rahul Nigam
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Conformal Field Theory ◽  
Statistical Mechanics ◽  
Critical Behavior ◽  
Verma Module ◽  
Virasoro Algebra ◽  
Quantum Field ◽  
Conformal Field ◽  
Insight Into

In this review we study the elementary structure of Conformal Field Theory in which is a recipe for further studies of critical behavior of various systems in statistical mechanics and quantum field theory. We briefly review CFT in dimensions which plays a prominent role for example in the well-known duality AdS/CFT in string theory where the CFT lives on the AdS boundary. We also describe the mapping of the theory from the cylinder to a complex plane which will help us gain an insight into the process of radial quantization and radial ordering. Finally we will develop the representation of the Virasoro algebra which is the well-known "Verma module".  

Some remarks on a deformed quantum field theory

2002 ◽  
Author(s):  
Marco Aurelio Do Rego Monteiro ◽  
V. B. Bezerra ◽  
E. M.F. Curado
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Field
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