6 papers
Scalar Quantum Fields: Theory Space and its Geometry
Viola Gattus, Peter Millington
Scalar fields provide perhaps the simplest playground in which to develop our understanding of quantum field theory. In this lecture, we consider what it means to write down a scal…
Vortex stability in pseudo-Hermitian theories
R. A. Battye, S. J. Cotterill, P. Millington
Pseudo-Hermitian (including -symmetric) field theories support phenomenology that cannot be replicated in standard Hermitian theories. We describe a concrete example…
Accelerated cosmological expansion from pseudo-Hermiticity
Edmund J. Copeland, Andrei Lazanu, Peter Millington +1
We show that a well-studied pseudo-Hermitian field theory composed of two complex scalar fields can generate accelerated cosmological expansion through a novel mechanism. The dynam…
Pseudo-real quantum fields
Maxim N. Chernodub, Peter Millington, Esra Sablevice
We introduce the concept of pseudo-reality for complex numbers. We show that this concept, applied to quantum fields, provides a unifying framework for two distinct approaches to p…
Anomalous dispersion, superluminality and instabilities in two-flavour theories with local non-Hermitian mass mixing
Maxim N. Chernodub, Peter Millington
Pseudo-Hermitian field theories possess a global continuous ``similarity'' symmetry, interconnecting the theories with the same physical particle content and an identical mass spec…
Flavour oscillations in pseudo-Hermitian quantum theories
Robert Mason, Peter Millington, Esra Sablevice
This note summarises recent progress in the formulation of flavour mixing and oscillations in pseudo-Hermitian quantum theories with non-Hermitian mass mixing matrices. Such non-He…