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Quantum Field Theory
This chapter covers the essentials of quantum field theory. Topics discussed include the curvature of gauge fields and the definition of the...
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Soft scalars in effective field theory
We derive a soft theorem for a massless scalar in an effective field theory with generic field content using the geometry of field space. This result...
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Lagrangian Field Theory
In itself, field theory is a vast domain that acquires its completeness when one considers the quantization of fields and the theory of fundamental...
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Effective Field Theory and Applications
In this chapter, we will review the field-theoretic treatment of general relativity based on an effective field theory extension of the...
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Wilsonian effective potentials and closed string field theory
We investigate Wilsonian effective field theory as a model for the construction of the tachyon potential and nonperturbative vacua in closed string...
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Simulating Nelsonian Quantum Field Theory
We describe the picture of physical processes suggested by Edward Nelson’s stochastic mechanics when generalized to quantum field theory regularized...
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Classical statistical simulation of quantum field theory
We propose a procedure of computing the n-point function in perturbation theory of the quantum field theory as the average over the complex Gaussian...
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Gravitational dynamics from collective field theory
We consider the relevance of a collective field theory description for the AdS/CFT correspondence. Collective field theory performs a systematic...
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Exotic field theories for (hybrid) fracton phases from imposing constraints in foliated field theory
Fracton phases of matter are gapped phases of matter that, by dint of their sensitivity to UV data, demand non-standard quantum field theories to...
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Nonlocal quantum field theory and quantum entanglement
We discuss the nonlocal nature of quantum mechanics and the link with relativistic quantum mechanics such as formulated by quantum field theory. We...
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Effective Field Theory
This chapter is dedicated to a discussion on the effective field theory (EFT) approach. Effective theories provide a simplified description of the...
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Dark sector effective field theory
We introduce the effective field theory of two different light dark particles interacting with the standard model (SM) light states in a single...
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Open string field theory with stubs
There are various reasons why adding stubs to the vertices of open string field theory (OSFT) is interesting: the stubs can not only tame certain...
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Effective brane field theory with higher-form symmetry
We propose an effective field theory for branes with higher-form symmetry as a generalization of ordinary Landau theory, which is an extension of the...
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Bootstrap** closed string field theory
The determination of the string vertices of closed string field theory is shown to be a conformal field theory problem solvable by combining insights...
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Observational tests of 4D double field theory
Although General Relativity (GR) is a very successful theory of gravity, it cannot explain every observational phenomenon. People have tried many...
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Elementary Particle Theory and Field Theory
This introductory chapter presents a historical account of the development of quantum field theory and particle physics pre-Standard Model,...
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Conformal Quantum Field Theory
In this chapter, a non-perturbative definition of quantum field theory in Minkowski space-time is given starting from the Wightman axioms. The...
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5 Density Dependent Relativistic Field Theory
The density-dependent relativistic hadron (DDRH) field theory is the prototype of a theory with interaction vertices having an intrinsic functional...
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Structural Algebraic Quantum Field Theory: Particles with Structure
AbstractConventional quantum field theory is a method for studying structureless elementary particles. Non-elementary particles, on the other hand,...
