On stochastic Einstein locality in algebraic relativistic quantum field theory

Relativistic Quantum Field Theory

Stochastic Einstein Locality Revisited

I discuss various formulations of stochastic Einstein locality (SEL), which is a version of the idea of relativistic causality, i.e. the idea that influences propagate at most as fast as light. SEL is similar to Reichenbach’s Principle of the Common Cause (PCC), and Bell’s Local Causality. My main aim is to discuss formulations of SEL for a fixed background spacetime. I previously argued that S...

Algebraic Quantum Field Theory∗

Algebraic quantum field theory provides a general, mathematically precise description of the structure of quantum field theories, and then draws out consequences of this structure by means of various mathematical tools — the theory of operator algebras, category theory, etc.. Given the rigor and generality of AQFT, it is a particularly apt tool for studying the foundations of QFT. This paper is...

Relativistic Quantum Non-Locality

The controversy between relativistic causality and quantum non-locality can be resolved by establishing the general relativistic background of quantum non-locality. PACS numbers: 03.65Bz; 04.20Cv; 98.80.Bp Visiting physicist at Stanford Linear Accelerator Center, Stanford University, California 94309 † E-mail: [email protected]

Quasiparticle excitations in relativistic quantum field theory

We analyze the particle-like excitations arising in relativistic field theories in states different than the vacuum. The basic properties characterizing the quasiparticle propagation are studied using two different complementary methods. First we introduce a frequency-based approach, wherein the quasiparticle properties are deduced from the spectral analysis of the twopoint propagators. Second,...