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Quantum Stochastic Processes and Quantum Many-Body Physics
(University of CambridgeDAMTPSt John's College, 2017-10-04)
This dissertation investigates the theory of quantum stochastic processes and its applications in quantum many-body physics.
The main goal is to analyse complexity-theoretic aspects of both static and dynamic properties ...
Evolution of cyclic mixmaster universes with noncomoving radiation
(American Physical SocietyPhysical Review D, 2017-12-15)
We study a model of a cyclic, spatially homogeneous, anisotropic mixmaster universe of Bianchi type IX 'mixmaster' universe, containing the a radiation field with non-comoving ('tilted' with respect to the tetrad frame of ...
Cosmological models in energy-momentum-squared gravity
(American Physical SocietyPhysical Review D, 2017-12-15)
We study the cosmological effects of adding terms of higher-order in the usual energy-momentum tensor to the matter lagrangian of general relativity. This is in contrast to most studies of higher-order gravity which focus ...
On the hyperbolicity of the most general Horndeski theory
(American Physical SocietyPHYSICAL REVIEW D, 2017-12-27)
In this paper we study the hyperbolicity of the equations of motion for the
most general Horndeski theory of gravity in a generic "weak field" background.
We first show that a special case of this theory, namely
Einstein ...
Quantum reality via late-time photodetection
(APSPhysical Review A, 2017-12-18)
We further investigate postulates for realist versions of r
elativistic quantum theory and quantum
field theory in Minkowski space and other background space-t
imes. According to these postulates,
quantum theory is ...
Energy dissipation rate limits for flow through rough channels and tidal flow across topography (vol 808, pg 562, 2016)
(JOURNAL OF FLUID MECHANICS, 2018-01-10)
This is a corrigendum
Vortices and the saturation of the vertical shear instability in protoplanetary discs
(Monthly Notices of the Royal Astronomical Society, 2018-03-01)
Analytic and Numerical aspects of isospectral flows
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics (DAMTP)Wolfson College, 2018-01-15)
In this thesis we address the analytic and numerical aspects of isospectral flows. Such flows occur in mathematical physics and numerical linear algebra. Their main structural feature is to retain the eigenvalues in the ...
Lattice QCD calculation of the B-(s) -> D-(s)* lv form factors at zero recoil and implications for vertical bar V-cb vertical bar
(PHYSICAL REVIEW D, 2018-03-09)
© 2018 authors. We present results of a lattice QCD calculation of B→D∗ and Bs→Ds∗ axial vector matrix elements with both states at rest. These zero recoil matrix elements provide the normalization necessary to infer a ...
Large-scale stability and astronomical constraints for coupled dark-energy models
(American Physical SocietyPhysical Review D, 2018-02-26)
The physics of the dark energy and the dark matter is still an open issue in cosmology. The dark energy occupies
about 68.5% of the total energy density of the universe today [1], and is believed to accelerate its observed ...