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PT-symmetric non-Hermitian quantum field theories with supersymmetry (2020)
Journal Article
Millington, P., Alexandre, J., & Ellis, J. (2020). PT-symmetric non-Hermitian quantum field theories with supersymmetry. Physical Review D, 101(8), https://doi.org/10.1103/physrevd.101.085015

We formulate supersymmetric non-Hermitian quantum field theories with PT symmetry, starting with free chiral boson/fermion models and then including trilinear superpotential interactions. We consider models with both Dirac and Majorana fermions, anal... Read More about PT-symmetric non-Hermitian quantum field theories with supersymmetry.

Imaging shape and strain in nanoscale engineered semiconductors for photonics by coherent x-ray diffraction (2020)
Journal Article
Berenguer, F., Pettinari, G., Felici, M., Balakrishnan, N., Clark, J. N., Ravy, S., …Ciatto, G. (2020). Imaging shape and strain in nanoscale engineered semiconductors for photonics by coherent x-ray diffraction. Communications Materials, 1, https://doi.org/10.1038/s43246-020-0021-6

Coherent x-ray diffractive imaging is a nondestructive technique that extracts three-dimensional electron density and strain maps from materials with nanometer resolution. It has been utilized for materials in a range of applications, and has signifi... Read More about Imaging shape and strain in nanoscale engineered semiconductors for photonics by coherent x-ray diffraction.

Mapping and characterization of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations (2020)
Journal Article
Rost, A., Gray, M. E., Pearce, F. R., Kuchner, U., Aragón-Salamanca, A., Pearce, F. R., …Yepes, G. (2020). Mapping and characterization of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations. Monthly Notices of the Royal Astronomical Society, 494(4), 5473-5491. https://doi.org/10.1093/mnras/staa1083

Upcoming wide-field surveys are well-suited to studying the growth of galaxy clusters by tracing galaxy and gas accretion along cosmic filaments. We use hydrodynamic simulations of volumes surrounding 324 clusters from The ThreeHundred project to dev... Read More about Mapping and characterization of cosmic filaments in galaxy cluster outskirts: strategies and forecasts for observations from simulations.

The emergence of local wrinkling or global buckling in thin freestanding bilayer films (2020)
Journal Article
Niven, J. F., Chowdhry, G., Sharp, J. S., & Dalnoki-Veress, K. (2020). The emergence of local wrinkling or global buckling in thin freestanding bilayer films. European Physical Journal E, 43, https://doi.org/10.1140/epje/i2020-11946-y

Periodic wrinkling of a rigid capping layer on a deformable substrate provides a useful method for templating surface topography for a variety of novel applications. Many experiments have studied wrinkle formation during the compression of a rigid fi... Read More about The emergence of local wrinkling or global buckling in thin freestanding bilayer films.

Neurobehavioural characterisation and stratification of reinforcement-related behaviour (2020)
Journal Article
Jia, T., Ing, A., Burke Quinlan, E., Tay, N., Luo, Q., Francesca, B., …Schumann, G. (2020). Neurobehavioural characterisation and stratification of reinforcement-related behaviour. Nature Human Behaviour, 4, 544–558. https://doi.org/10.1038/s41562-020-0846-5

Reinforcement-related cognitive processes, such as reward processing, inhibitory control and social-emotional regulation are critical components of externalising and internalising behaviours. It is unclear to what extent the deficit in each of these... Read More about Neurobehavioural characterisation and stratification of reinforcement-related behaviour.

Identifying Strong Lenses with Unsupervised Machine Learning using Convolutional Autoencoder (2020)
Journal Article
Cheng, T., Li, N., Conselice, C. J., Aragón-Salamanca, A., Dye, S., & Metcalf, R. B. (2020). Identifying Strong Lenses with Unsupervised Machine Learning using Convolutional Autoencoder. Monthly Notices of the Royal Astronomical Society, 394(3), 3750–3765. https://doi.org/10.1093/mnras/staa1015

In this paper we develop a new unsupervised machine learning technique comprised of a feature extractor, a convolutional autoencoder (CAE), and a clustering algorithm consisting of a Bayesian Gaussian mixture model (BGM). We apply this technique to v... Read More about Identifying Strong Lenses with Unsupervised Machine Learning using Convolutional Autoencoder.

Submicrosecond entangling gate between trapped ions via Rydberg interaction (2020)
Journal Article
Zhang, C., Pokorny, F., Hennrich, M., Li, W., Lesanovsky, I., Higgins, G., & Pöschl, A. (2020). Submicrosecond entangling gate between trapped ions via Rydberg interaction. Nature, 580(7803), 345-349. https://doi.org/10.1038/s41586-020-2152-9

© 2020, The Author(s), under exclusive licence to Springer Nature Limited. Generating quantum entanglement in large systems on timescales much shorter than the coherence time is key to powerful quantum simulation and computation. Trapped ions are amo... Read More about Submicrosecond entangling gate between trapped ions via Rydberg interaction.

Probing the thermal state of the intergalactic medium at z > 5 with the transmission spikes in high-resolution Lyαforest spectra (2020)
Journal Article
Gaikwad, P., Rauch, M., Haehnelt, M. G., Puchwein, E., Bolton, J. S., Keating, L. C., …Rorai, A. (2020). Probing the thermal state of the intergalactic medium at z > 5 with the transmission spikes in high-resolution Lyαforest spectra. Monthly Notices of the Royal Astronomical Society, 494(4), 5091–5109. https://doi.org/10.1093/mnras/staa907

Many-Body Chiral Edge Currents and Sliding Phases of Atomic Spin Waves in Momentum-Space Lattice (2020)
Journal Article
Li, Y., Cai, H., Wang, D., Li, L., Yuan, J., & Li, W. (2020). Many-Body Chiral Edge Currents and Sliding Phases of Atomic Spin Waves in Momentum-Space Lattice. Physical Review Letters, 124(14), https://doi.org/10.1103/physrevlett.124.140401

Collective excitations (spinwaves) of long-lived atomic hyperfine states can be synthesized into a Bose-Hubbard model in momentum space. We explore many-body ground states and dynamics of a two-leg momentum-space lattice formed by two coupled hyperfi... Read More about Many-Body Chiral Edge Currents and Sliding Phases of Atomic Spin Waves in Momentum-Space Lattice.

Euclid: the selection of quiescent and star-forming galaxies using observed colours (2020)
Journal Article
Bisigello, L., Kuchner, U., Conselice, C., Andreon, S., Bolzonella, M., Duc, P., …Zoubian, J. (2020). Euclid: the selection of quiescent and star-forming galaxies using observed colours. Monthly Notices of the Royal Astronomical Society, 494(2), 2337-2354. https://doi.org/10.1093/mnras/staa885

The Euclid mission will observe well over a billion galaxies out to z ∼ 6 and beyond. This will offer an unrivalled opportunity to investigate several key questions for understanding galaxy formation and evolution. The first step for many of these st... Read More about Euclid: the selection of quiescent and star-forming galaxies using observed colours.

Room temperature upconversion electroluminescence from a mid-infrared In(AsN) tunnelling diode (2020)
Journal Article
Di Paola, D. M., Lu, Q., Repiso, E., Kesaria, M., Makarovsky, O., Krier, A., & Patanè, A. (2020). Room temperature upconversion electroluminescence from a mid-infrared In(AsN) tunnelling diode. Applied Physics Letters, 116(14), https://doi.org/10.1063/5.0002407

Light emitting diodes (LEDs) in the mid-infrared (MIR) spectral range require material systems with tailored optical absorption and emission at wavelengths λ > 2 μm. Here, we report on MIR LEDs based on In(AsN)/(InAl)As resonant tunneling diodes (RTD... Read More about Room temperature upconversion electroluminescence from a mid-infrared In(AsN) tunnelling diode.

Black holes in self-tuning cubic Horndeski cosmology (2020)
Journal Article
Emond, W. T., Lehébel, A., & Saffin, P. M. (2020). Black holes in self-tuning cubic Horndeski cosmology. Physical Review D, 101(8), https://doi.org/10.1103/physrevd.101.084008

Observations of neutron star mergers in the late Universe have given significant restrictions to the class of viable scalar-tensor theories. In this paper we construct black holes within the “self-tuning” class of this restricted set, whereby the bar... Read More about Black holes in self-tuning cubic Horndeski cosmology.

Photoluminescence dynamics in few-layer InSe (2020)
Journal Article
Venanzi, T., Arora, H., Winnerl, S., Pashkin, A., Chava, P., Patane, A., …Schneider, H. (2020). Photoluminescence dynamics in few-layer InSe. Physical Review Materials, 4(4), https://doi.org/10.1103/PhysRevMaterials.4.044001

We study the optical properties of thin flakes of InSe encapsulated in hBN. More specifically, we investigate the photoluminescence (PL) emission and its dependence on sample thickness and temperature. Through the analysis of the PL lineshape, we dis... Read More about Photoluminescence dynamics in few-layer InSe.

Magnetically-induced Rayleigh Taylor instability under rotation: comparison of experimental and theoretical results (2020)
Journal Article
Scase, M., Baldwin, K., & Hill, R. (in press). Magnetically-induced Rayleigh Taylor instability under rotation: comparison of experimental and theoretical results. Physical Review E,

Our theoretical work has shown that rotating a Rayleigh-Taylor-unstable two-layer stratification about a vertical axis slows the development of the instability under gravity, and can stabilise axisymmetric modes indefinitely. Here, we compare theoret... Read More about Magnetically-induced Rayleigh Taylor instability under rotation: comparison of experimental and theoretical results.

Heteronuclear DNP of 1H and 19F nuclei using BDPA as a polarizing agent (2020)
Journal Article
Gennaro, A., Karabanov, A., Potapov, A., & Kockenberger, W. (2020). Heteronuclear DNP of 1H and 19F nuclei using BDPA as a polarizing agent. Physical Chemistry Chemical Physics, 22(15), 7803-7816 . https://doi.org/10.1039/d0cp00892c

This work explores the dynamic nuclear polarization (DNP) of 1H and 19F nuclei in a sample of 25/75 (% v/v) fluorobenzene/toluene containing the radical 1,3-bisphenylene-2-phenylallyl radical (BDPA) as a polarizing agent. Previously, heteronuclear ef... Read More about Heteronuclear DNP of 1H and 19F nuclei using BDPA as a polarizing agent.

Electromagnetically induced transparency of interacting Rydberg atoms with two-body dephasing (2020)
Journal Article
Yan, D., Wang, B., Bai, Z., & Li, W. (2020). Electromagnetically induced transparency of interacting Rydberg atoms with two-body dephasing. Optics Express, 28(7), 9677-9689. https://doi.org/10.1364/OE.389247

We study electromagnetically induced transparency in a three-level ladder type configuration in ultracold atomic gases, where the upper level is an electronically highly excited Rydberg state. An effective distance dependent two-body dephasing can be... Read More about Electromagnetically induced transparency of interacting Rydberg atoms with two-body dephasing.

Effect of thermal annealing on the opticaland structural properties of (311)B and(001) GaAsBi/GaAs single quantum wellsgrown by MBE (2020)
Journal Article
Alghamdi, H., Gordo, V. O., Schmidbauer, M., Felix, J. F., Alhassan, S., Alhassni, A., …Henini, M. (2020). Effect of thermal annealing on the opticaland structural properties of (311)B and(001) GaAsBi/GaAs single quantum wellsgrown by MBE. Journal of Applied Physics, 127, https://doi.org/10.1063/1.5140447

The effect of Furnace Annealing (FA) and Rapid Thermal annealing (RTA) on the structural and optical properties of GaAs1 − xBix/GaAs single quantum wells grown on (001) and (311)B substrates by molecular beam epitaxy was investigated. The structural... Read More about Effect of thermal annealing on the opticaland structural properties of (311)B and(001) GaAsBi/GaAs single quantum wellsgrown by MBE.

Collectively enhanced chiral photon emission from an atomic array near a nanofiber (2020)
Journal Article
Jones, R., Buonaiuto, G., Lang, B., Lesanovsky, I., & Olmos, B. (2020). Collectively enhanced chiral photon emission from an atomic array near a nanofiber. Physical Review Letters, 124(9), https://doi.org/10.1103/physrevlett.124.093601

Emitter ensembles interact collectively with the radiation field. In the case of a one-dimensional array of atoms near a nanofiber, this collective light-matter interaction does not only lead to an increased photon coupling to the guided modes within... Read More about Collectively enhanced chiral photon emission from an atomic array near a nanofiber.

Phase synchronization in coupled bistable oscillators (2020)
Journal Article
Jessop, M. R., Li, W., & Armour, A. D. (2020). Phase synchronization in coupled bistable oscillators. Physical Review Research, 2(1), https://doi.org/10.1103/physrevresearch.2.013233

We introduce a simple model system to study synchronization theoretically in quantum oscillators that are not just in limit-cycle states, but rather display a more complex bistable dynamics. Our oscillator model is purely dissipative, with a two-phot... Read More about Phase synchronization in coupled bistable oscillators.


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