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Mean field quantization of effective string

vacuum which turns out to be unstable for d > 2. In particular, the string susceptibility index γstr is 1 in the usual perturbation theory, but equals 1/2 in the mean-field approximation that applies for 2 ... charge equals zero in the mean- eld approximation and argue that uctuations about the mean eld do not spoil conformal invariance. Long strings; Conformal Field Models in String Theory; Bosonic Strings

Topological defects in open string field theory

, Japan 9 Via Pietro Giuria 1 , I-10125 Torino , Italy We show how conformal field theory topological defects can relate solutions of open string field theory for different boundary conditions. To this end ... upon defect action. Surprisingly the fusion algebra of defects is realized on open string fields only up to a (star algebra) isomorphism. Conformal Field Models in String Theory; String Field Theory

4D gauge theories with conformal matter

conformal window as well as confining gauge group factors depending on the total amount of matter. We also present F-theory realizations of these field theories via elliptically fibered Calabi-Yau fourfolds ... corrections can also modify the classical moduli space of the F-theory model, matching expectations from effective field theory. Keywords F-Theory Supersymmetric Gauge Theory Brane Dynamics in Gauge Theories

Algebraic Quantum Field Theory on Spacetimes with Timelike Boundary

We analyze quantum field theories on spacetimes M with timelike boundary from a model-independent perspective. We construct an adjunction which describes a universal extension to the whole spacetime ... category of algebraic quantum field theories on M . Denoting the full subcategory of regions in the interior of M by Rint M ⊆ RM , we may restrict any theory B ∈ QFT(M ) to a theory res B ∈ QFT(int M

Vector profile and gauge invariant observables of string field theory solutions for constant magnetic field background

Abstract We study profiles and gauge invariant observables of classical solutions corresponding to a constant magnetic field on a torus in open string field theory. We numerically find that the ... ; String Field Theory; D-branes; Tachyon Condensation - 1 Introduction 2 Classical solutions for constant magnetic eld background 3 Pro les of the classical solution 3.1 3.2 3.3 3.4 4.1 4.2 4.3 Pro les

Galilean field theories and conformal structure

suggest that in nite enhancement of symmetries in the non-relativistic limit is a generic feature of conformal eld theories in any dimension. Conformal and W Symmetry; Conformal Field Theory; Space-Time ... Quantum Electrodynamics. A very natural avenue to which we would like to extend our work is Supersymmetric gauge theories. In particular, we would like to examine N = 4 Super Yang-MIlls (SYM) theory. This

Matter field Kähler metric in heterotic string theory from localisation

case we are focusing on in this note. One of the next important steps towards realistic particle physics from string theory is to nd models with the correct Yukawa couplings. The calculation of physical ... Yukawa coupings in string theory proceeds in three steps. First, the holomorphic Yukawa couplings, that is, the trilinear couplings in the superpotential have to be determined. As holomorphic quantities

Superdensity operators for spacetime quantum mechanics

Abstract We introduce superdensity operators as a tool for analyzing quantum information in spacetime. Superdensity operators encode spacetime correlation functions in an operator framework, and ... protocols for measuring spacetime entropies. Keywords Space-Time Symmetries Lattice Quantum Field Theory  ArXiv ePrint: 1711.03119 Download to read the full article text Notes Open Access This

Ultraviolet phenomena in AdS self-interacting quantum field theory

Quantum A.3 Klein-Gordon elds A.4 Chronological propagators eld theory \bulks" and conformal eld theories on their boundaries [1{3]. The interest in spacetimes having positive curvature is older as they ... [INSPIRE]. [25] S.J. Avis , C.J. Isham and D. Storey , Quantum Field Theory in anti-de Sitter Space-Time, Phys. Rev. D 18 ( 1978 ) 3565 [INSPIRE]. [26] C. Kent , Quantum scalar eld theory on anti-de Sitter

Quantum gravity from conformal field theory

theory. In particular this yields much new information on the spectrum of double-trace operators which can then be used, in combination with superconformal symmetry and crossing symmetry, to obtain a ... dimensions. 1/N Expansion; AdS-CFT Correspondence; Conformal Field Theory; Inte- - Quantum 1 Introduction and summary 2 3 4 5 6 7 8 Four-point functions of half-BPS multiplets The operator product

Inverse bootstrapping conformal field theories

AbstractWe propose a novel approach to study conformal field theories (CFTs) in general dimensions. In the conformal bootstrap program, one usually searches for consistent CFT data that satisfy ... CFTs, the 4 Wilson-Fisher CFT, the Lee-Yang CFTs and the Ising CFTs are consistent with the universal relations from the minimal fusion rule Conformal Field Theory; E ective Field Theories - ; 2 are

A note on the WGC, effective field theory and clockwork within string theory

)2 with Z ≫ 1). This type of Higgs multiplets play also a key role in clockwork U(1) theories. We study these issues in the context of heterotic string theory and find that, even if there is no new ... physics at the standard magnetic WGC scale Λ ∼ gIRMP , the string scale is just kIRΛ. Here kIR is the level of the IR U(1) worldsheet current. Effective Field Theories; Superstrings and Heterotic Strings

6D fractional quantum Hall effect

energy physics is governed by a bulk 7D topological field theory of abelian three-form potentials with a single derivative Chern-Simons-like action coupled to a 6D anti-chiral theory of Euclidean effective ... physical footing. Chern-Simons Theories; M-Theory; Topological Field Theories; Topological - four-form 1 Introduction 2 7D bulk 3 Many body wavefunction 3.1 3.2 3.3 3.4 Landau wavefunction Zero slope

Weak Adiabatic Limit in Quantum Field Theories with Massless Particles

result applies, for example, to quantum electrodynamics and non-abelian Yang–Mills theories. ... Henri Poincar´e 1. Introduction Relativistically covariant perturbative quantum field theory (QFT) in the Minkowski space is one of the most successful modern physical theories. Its models, especially

6d string chains

singularities in Type IIB string theory. We nd that these bound states of strings admit (0,4) supersymmetric quiver descriptions and show how one can compute their elliptic genera. Duality in Gauge Field ... Theories; F-Theory; Field Theories in Higher Dimen- Chains of strings Partition functions of M5 branes probing ADE Singularities 1 Introduction 2 3 4 5 3.1 3.2 4.1 4.2 M5 branes probing an AN 1

Quantum theory and consciousness: an overview with selected examples

It is widely accepted that consciousness or, in other words, mental activity is in some way correlated to the behavior of the brain or, in other words, material brain activity. Since quantum theory ... quantum theory [66]. 4.3. From Umezawa to Vitiello: quantum field theory of mind/matter states. In the 1960s, Ricciardi and Umezawa [ 67 ] suggested to utilize the formalism of quantum field theory to

Novel string field theory with also negative energy constituents/objects gives Veneziano amplitude

quantum eld theory! From the previous works of ours it is important to remember: we develop a formalism for description of an arbitrary number of strings (String Field Theory) by means of a Hilbert space ... indicates that our novel string eld theory is indeed string theory. Bosonic Strings; Lattice Integrable Models; String Field Theory - 1 Introduction 1.1 1.2 1.3 1.4 1.5 1.6 1.8 1.9 2.1 2.2 6.1 6.2 7.1 7.2

One loop tadpole in heterotic string field theory

We compute the off-shell 1-loop tadpole amplitude in heterotic string field theory. With a special choice of cubic vertex, we show that this amplitude can be computed exactly. We obtain explicit and ... Introduction Quantum closed string eld theories Closed bosonic string eld theory Heterotic string eld theory One loop tadpole in closed bosonic string eld theory General construction of cubic and tadpole

Non-Abelian black holes in string theory

"gauge" D5-branes do contribute to the mass in the expected form. The correct interpretation of the 5-dimensional charges in terms of the string-theory objects solves the non-Abelian hair puzzle, allowing ... -Abelian black holes that can be obtained by adding an instanton eld to the well-known D1D5W Abelian black holes. Naively, Black Holes in String Theory; Black Holes - the non-Abelian elds seem to

Circuit complexity in quantum field theory

Motivated by recent studies of holographic complexity, we examine the question of circuit complexity in quantum field theory. We provide a quantum circuit model for the preparation of Gaussian states ... algorithms for fermionic quantum eld theories, arXiv:1404.7115 [INSPIRE]. quantum eld theory, arXiv:1703.00454 [INSPIRE]. 10 (2015) 159 [arXiv:1401.3916]. [31] S.P. Jordan, H. Krovi, K.S.M. Lee and J