175 citations · 1.6k across the 58 of their papers we have counts for
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Open quantum dynamics induced by light scalar fields
Clare Burrage, Christian Käding, Peter Millington +1
We consider the impact of a weakly coupled environment comprising a light scalar field on the open dynamics of a quantum probe field, resulting in a master equation for the probe f…
Symmetron Scalar Fields: Modified Gravity, Dark Matter or Both?
Clare Burrage, Edmund J. Copeland, Christian Käding +1
Scalar fields coupled to gravity through the Ricci scalar have been considered both as dark matter candidates and as a possible modified gravity explanation for galactic dynamics.…
Particle level screening of scalar forces in 1+1 dimensions
Clare Burrage, Benjamin Elder, Peter Millington
We investigate how non-linear scalar field theories respond to point sources. Taking the symmetron as a specific example of such a theory, we solve the non-linear equation of motio…
Quasi-normal modes and fermionic vacuum decay around a Kerr black hole
Antonin Coutant, Peter Millington
We analyze the instability of the non-rotating fermion vacuum in Kerr spacetimes. We describe how the co-rotating Fermi sea is formed as a result of a spontaneous vacuum decay. Mos…
Gauge invariance and the Englert-Brout-Higgs mechanism in non-Hermitian field theories
Jean Alexandre, John Ellis, Peter Millington +1
We discuss -symmetric Abelian gauge field theories, as well as their extension to the Englert-Brout-Higgs mechanism for generating a mass for a vector boson. Gauge in…
Boltzmann equations for preheating
William T. Emond, Peter Millington, Paul M. Saffin
We derive quantum Boltzmann equations for preheating by means of the density matrix formalism, which account for both the non-adiabatic particle production and the leading collisio…
Radiative effects on false vacuum decay in Higgs-Yukawa theory
Wen-Yuan Ai, Bjorn Garbrecht, Peter Millington
We derive fermionic Green's functions in the background of the Euclidean solitons describing false vacuum decay in a prototypal Higgs-Yukawa theory. In combination with appropriate…
Spontaneous symmetry breaking and the Goldstone theorem in non-Hermitian field theories
Jean Alexandre, John Ellis, Peter Millington +1
We demonstrate the extension to PT-symmetric field theories of the Goldstone theorem, confirming that the spontaneous appearance of a field vacuum expectation value via minimisatio…
Fifth forces, Higgs portals and broken scale invariance
Clare Burrage, Edmund J. Copeland, Peter Millington +1
We study the relationship between the strength of fifth forces and the origin of scale breaking in the Standard Model (SM) of particle physics. We start with a light scalar field t…
Fluctuations about the Fubini-Lipatov instanton for false vacuum decay in classically scale invariant models
Bjorn Garbrecht, Peter Millington
For a scalar theory whose classical scale invariance is broken by quantum effects, we compute self-consistent bounce solutions and Green's functions. Deriving analytic expressions,…
Energy-parity from a bicomplex algebra
Max Edward Laycock, Peter Millington
By replacing the field of complex numbers with the commutative ring of bicomplex numbers, we attempt to construct interacting scalar quantum field theories that feature both positi…