Skip to main content

Research Repository

Advanced Search

All Outputs (100)

Noncommutative connections on bimodules and Drinfeld twist deformation (2014)
Journal Article
Aschieri, P., & Schenkel, A. (2014). Noncommutative connections on bimodules and Drinfeld twist deformation. Advances in Theoretical and Mathematical Physics, 18(3), 513-612

Given a Hopf algebra H, we study modules and bimodules over an algebra A that carry an H-action, as well as their morphisms and connections. Bimodules naturally arise when considering noncommutative analogues of tensor bundles. For quasitriangular Ho... Read More about Noncommutative connections on bimodules and Drinfeld twist deformation.

Mutations of fake weighted projective spaces (2014)
Journal Article
Coates, T., Gonshaw, S., Kasprzyk, A. M., & Nabijou, N. (2014). Mutations of fake weighted projective spaces. Electronic Journal of Combinatorics, 21(4), Article P4.14

We characterise mutations between fake weighted projective spaces, and give explicit formulas for how the weights and multiplicity change under mutation. In particular, we prove that multiplicity-preserving mutations between fake weighted projective... Read More about Mutations of fake weighted projective spaces.

Certifying quantumness: benchmarks for the optimal processing of generalized coherent and squeezed states (2014)
Journal Article
Yang, Y., Chiribella, G., & Adesso, G. (2014). Certifying quantumness: benchmarks for the optimal processing of generalized coherent and squeezed states. Physical Review A, 90(4), https://doi.org/10.1103/PhysRevA.90.042319

Quantum technology promises revolutionary advantages in information processing and transmission compared to classical technology; however, determining which specific resources are needed to surpass the capabilities of classical machines often remains... Read More about Certifying quantumness: benchmarks for the optimal processing of generalized coherent and squeezed states.

A multiscale analysis of nutrient transport and biological tissue growth in vitro (2014)
Journal Article
O'Dea, R. D., Nelson, M. R., El Haj, A., Waters, S. L., & Byrne, H. M. (2014). A multiscale analysis of nutrient transport and biological tissue growth in vitro. Mathematical Medicine and Biology, https://doi.org/10.1093/imammb/dqu015

In this paper, we consider the derivation of macroscopic equations appropriate to describe the growth of biological tissue, employing a multiple-scale homogenisation method to accommodate explicitly the influence of the underlying microscale structur... Read More about A multiscale analysis of nutrient transport and biological tissue growth in vitro.

Estimating extreme quantiles under random truncation (2014)
Journal Article
Gardes, L., & Stupfler, G. (2015). Estimating extreme quantiles under random truncation. TEST, 24(2), 207–227. https://doi.org/10.1007/s11749-014-0403-5

The goal of this paper is to provide estimators of the tail index and extreme quantiles of a heavy-tailed random variable when it is right truncated. The weak consistency and asymptotic normality of the estimators are established. The finite sample p... Read More about Estimating extreme quantiles under random truncation.

Stochastic monotonicity and continuity properties of functions defined on Crump-Mode-Jagers branching processes, with application to vaccination in epidemic modelling (2014)
Journal Article
Ball, F., González, M., Martínez, R., & Slavtchova-Bojkova, M. (2014). Stochastic monotonicity and continuity properties of functions defined on Crump-Mode-Jagers branching processes, with application to vaccination in epidemic modelling. Bernoulli, 20(4), https://doi.org/10.3150/13-BEJ551

This paper is concerned with Crump-Mode-Jagers branching processes, describing spread of an epidemic depending on the proportion of the population that is vaccinated. Births in the branching process are aborted independently with a time-dependent pro... Read More about Stochastic monotonicity and continuity properties of functions defined on Crump-Mode-Jagers branching processes, with application to vaccination in epidemic modelling.

Stochastic scheduling: A short history of index policies and new approaches to index generation for dynamic resource allocation (2014)
Journal Article
Glazebrook, K., Hodge, D., Kirkbride, C., & Minty, R. (2014). Stochastic scheduling: A short history of index policies and new approaches to index generation for dynamic resource allocation. Journal of Scheduling, 17(5), 407–425. https://doi.org/10.1007/s10951-013-0325-1

In the 1970’s John Gittins discovered that multi-armed bandits, an important class of models for the dynamic allocation of a single key resource among a set of competing projects, have optimal solutions of index form. At each decision epoch such poli... Read More about Stochastic scheduling: A short history of index policies and new approaches to index generation for dynamic resource allocation.

Turbulent ‘stopping plumes’ and plume pinch-off in uniform surroundings (2014)
Journal Article
Kattimeri, A., & Scase, M. M. (2014). Turbulent ‘stopping plumes’ and plume pinch-off in uniform surroundings. Environmental Fluid Mechanics, 15(5), https://doi.org/10.1007/s10652-014-9387-7

Observations of turbulent convection in the environment are of variously sus- tained plume-like flows or intermittent thermal-like flows. At different times of the day the prevailing conditions may change and consequently the observed flow regimes ma... Read More about Turbulent ‘stopping plumes’ and plume pinch-off in uniform surroundings.

Entanglement entropy in Fermi gases and Anderson's orthogonality catastrophe (2014)
Journal Article
Ossipov, A. (2014). Entanglement entropy in Fermi gases and Anderson's orthogonality catastrophe. Physical Review Letters, 113(13), Article 130402. https://doi.org/10.1103/PhysRevLett.113.130402

We study the ground-state entanglement entropy of a finite subsystem of size L of an infinite system of noninteracting fermions scattered by a potential of finite range a. We derive a general relation between the scattering matrix and the overlap mat... Read More about Entanglement entropy in Fermi gases and Anderson's orthogonality catastrophe.

Unruh-DeWitt detector response across a Rindler firewall is finite (2014)
Journal Article
Louko, J. (2014). Unruh-DeWitt detector response across a Rindler firewall is finite. Journal of High Energy Physics, 2014(9), https://doi.org/10.1007/JHEP09%282014%29142

We investigate a two-level Unruh-DeWitt detector coupled to a massless scalar field or its proper time derivative in (1 + 1)-dimensional Minkowski spacetime, in a quantum state whose correlation structure across the Rindler horizon mimics the station... Read More about Unruh-DeWitt detector response across a Rindler firewall is finite.

Impurities as a quantum thermometer for a Bose-Einstein condensate (2014)
Journal Article
Sabín, C., White, A., Hackermuller, L., & Fuentes, I. (2014). Impurities as a quantum thermometer for a Bose-Einstein condensate. Scientific Reports, 4, 1-6. https://doi.org/10.1038/srep06436

We introduce a primary thermometer which measures the temperature of a Bose-Einstein Condensate in the sub-nK regime. We show, using quantum Fisher information, that the precision of our technique improves the state-of-the-art in thermometry in the s... Read More about Impurities as a quantum thermometer for a Bose-Einstein condensate.

Systematic analysis of the contributions of stochastic voltage gated channels to neuronal noise (2014)
Journal Article
O'Donnell, C., & van Rossum, M. C. (2014). Systematic analysis of the contributions of stochastic voltage gated channels to neuronal noise. Frontiers in Computational Neuroscience, 8, https://doi.org/10.3389/fncom.2014.00105

Electrical signaling in neurons is mediated by the opening and closing of large numbers of individual ion channels. The ion channels' state transitions are stochastic and introduce fluctuations in the macroscopic current through ion channel populatio... Read More about Systematic analysis of the contributions of stochastic voltage gated channels to neuronal noise.

Unruh-DeWitt detector response along static and circular-geodesic trajectories for Schwarzschild-anti-de Sitter black holes (2014)
Journal Article
Ng, K. K., Hodgkinson, L., Louko, J., Mann, R. B., & Martín-Martínez, E. (2014). Unruh-DeWitt detector response along static and circular-geodesic trajectories for Schwarzschild-anti-de Sitter black holes. Physical Review D - Particles, Fields, Gravitation and Cosmology, 90(6), Article 064003. https://doi.org/10.1103/PhysRevD.90.064003

© 2014 American Physical Society. We present novel methods to numerically address the problem of characterizing the response of particle detectors in curved spacetimes. These methods allow for the integration of the Wightman function, at least in pri... Read More about Unruh-DeWitt detector response along static and circular-geodesic trajectories for Schwarzschild-anti-de Sitter black holes.

No-activation theorem for Gaussian nonclassical correlations by Gaussian operations (2014)
Journal Article
Mišta, L., McNulty, D., & Adesso, G. (2014). No-activation theorem for Gaussian nonclassical correlations by Gaussian operations. Physical Review A, 90(2), https://doi.org/10.1103/PhysRevA.90.022328

We study general quantum correlations of continuous variable Gaussian states and their interplay with entanglement. Specifically, we investigate the existence of a quantum protocol activating all nonclassical correlations between the subsystems of an... Read More about No-activation theorem for Gaussian nonclassical correlations by Gaussian operations.

Cannabinoid-mediated short-term plasticity in hippocampus (2014)
Journal Article
Zachariou, M., & Thul, R. (2014). Cannabinoid-mediated short-term plasticity in hippocampus. Journal of Computational Neuroscience, 37(3), https://doi.org/10.1007/s10827-014-0518-4

Endocannabinoids modulate both excitatory and inhibitory neurotransmission in hippocampus via activation of pre-synaptic cannabinoid receptors. Here, we present a model for cannabinoid mediated short-term depression of excitation (DSE) based on our r... Read More about Cannabinoid-mediated short-term plasticity in hippocampus.

A mathematical model of the human metabolic system and metabolic flexibility (2014)
Journal Article
Pearson, T., Wattis, J. A., King, J. R., MacDonald, I. A., & Mazzatti, D. (2014). A mathematical model of the human metabolic system and metabolic flexibility. Bulletin of Mathematical Biology, 76(9), https://doi.org/10.1007/s11538-014-0001-4

In healthy subjects some tissues in the human body display metabolic flexibility, by this we mean the ability for the tissue to switch its fuel source between predominantly carbohydrates in the post prandial state and predominantly fats in the fasted... Read More about A mathematical model of the human metabolic system and metabolic flexibility.

Discrete breathers in honeycomb Fermi-Pasta-Ulam lattices (2014)
Journal Article
Wattis, J. A., & James, L. M. (2014). Discrete breathers in honeycomb Fermi-Pasta-Ulam lattices. Journal of Physics A: Mathematical and Theoretical, 47(34), Article 345101. https://doi.org/10.1088/1751-8113/47/34/345101

We consider the two-dimensional Fermi-Pasta-Ulam lattice with hexagonal honeycomb symmetry, which is a Hamiltonian system describing the evolution of a scalar-valued quantity subject to nearest neighbour interactions. Using multiple-scale analy... Read More about Discrete breathers in honeycomb Fermi-Pasta-Ulam lattices.