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Topological Quantum Field Theories and Operator Algebras
We have seen much fruitful interactions between 3-dimensional topology and operator algebras since the stunning discovery of the Jones polynomial for...
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Rényi mutual information in quantum field theory, tensor networks, and gravity
We explore a large class of correlation measures called the α − z Rényi mutual informations (RMIs). Unlike the commonly used notion of RMI involving...
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Classical double copy of spinning worldline quantum field theory
We study the classical double copy of massive spinning objects in the worldline quantum field theories (WQFT) formalism. We couple the
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Many Particle Physics as a Quantum Field Theory
In this chapter we will attempt to develop intuition aimed at answering the question “What is a quantum field theory?”. We will do this by studying a...
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Purely virtual extension of quantum field theory for gauge invariant fields: Yang–Mills theory
We extend quantum field theory by including purely virtual “cloud” sectors, to define physical off-shell correlation functions of gauge invariant...
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Degenerate Perturbation Theory for Models of Quantum Field Theory with Symmetries
We consider Hamiltonians of models describing non-relativistic quantum mechanical matter coupled to a relativistic field of bosons. If the free...
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Quantum Field Theory
In this chapter, we explore the properties of quantum mechanical systems with infinitely many degrees of freedom. As already argued in the previous...
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Interacting Quantum Scalar Field Theory on a Causal Set
We introduce ϕ4 interacting real scalar quantum field theory (QFT) on causal sets. We consider both the canonical framework of causal set free QFT,...
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Relativistic quantum Otto engine: instant work extraction from a quantum field
In this study, we carry out a non-perturbative approach to a quantum Otto engine, employing an Unruh-DeWitt particle detector to extract work from a...
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Smooth 1-Dimensional Algebraic Quantum Field Theories
This paper proposes a refinement of the usual concept of algebraic quantum field theories (AQFTs) to theories that are smooth in the sense that they...
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Supersymmetric backgrounds in (1 + 1) dimensions and inhomogeneous field theory
We find a (1 + 1)-dimensional metric solution for a background hosting various supersymmetric field theories with a single non-chiral real...
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Asymptotic Measurement Schemes for Every Observable of a Quantum Field Theory
In quantum measurement theory, a measurement scheme describes how an observable of a given system can be measured indirectly using a probe. The...
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Algebraic and Statistical Methods in Quantum and Gravitational Physics
AbstractA scheme for constructing quantum mechanics is described, in which the Hilbert space and linear operators are not the primary notions of the...
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From Bohm’s Vision of Quantum Processes to Quantum Field Theory ... to the Transactional Approach. Variations on the Theme
The vision of quantum physics developed by David Bohm, and especially the idea of the implicit order, can be considered the true epistemological...
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Decoherence and Landauer’s principle in qubit-cavity quantum-field-theory interaction
We consider quantum decoherence and Landauer’s principle in qubit-cavity quantum field theory (QFT) interaction, treating the qubit as the system and...
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The nilpotent structure of open-closed string field theory
In this note we revisit the homotopy-algebraic structure of oriented bosonic open-closed string field theory and we give a new compact formulation in...
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Symmetry resolved entanglement of excited states in quantum field theory. Part III. Bosonic and fermionic negativity
In two recent works, we studied the symmetry resolved Rényi entropies of quasi-particle excited states in quantum field theory. We found that the...
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Topological Quantum Gates in Homotopy Type Theory
Despite the plausible necessity of topological protection for realizing scalable quantum computers, the conceptual underpinnings of topological...
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Analytic States in Quantum Field Theory on Curved Spacetimes
We discuss high energy properties of states for (possibly interacting) quantum fields in curved spacetimes. In particular, if the spacetime is real...
