All Outputs (2165)

Cosmic Evolution of the H2 Mass Density and the Epoch of Molecular Gas (2021)
Journal Article
Garratt, T. K., Coppin, K. E. K., Geach, J. E., Almaini, O., Hartley, W. G., Maltby, D. T., …van der Werf, P. (2021). Cosmic Evolution of the H2 Mass Density and the Epoch of Molecular Gas. Astrophysical Journal, 912(1), Article 62. https://doi.org/10.3847/1538-4357/abec81

We present new empirical constraints on the evolution of ${\rho }_{{{\rm{H}}}_{2}}$, the cosmological mass density of molecular hydrogen, back to z ≈ 2.5. We employ a statistical approach measuring the average observed 850 μm flux density of near-inf... Read More about Cosmic Evolution of the H2 Mass Density and the Epoch of Molecular Gas.

Near infrared integrated photonic switches for portable quantum sensors (2021)
Journal Article
Saleeb-Mousa, B., Moss, J. L., Maclean, J. O., Campion, R. P., & Mellor, C. J. (2021). Near infrared integrated photonic switches for portable quantum sensors. Journal of Physics: Conference Series, 1919(1), 1-8. https://doi.org/10.1088/1742-6596/1919/1/012007

A novel integrated semiconductor photonic switch, based on carrier-induced refractive index changes, has been designed and fabricated for use at near infrared wavelengths (890-920 nm, 750-780 nm and 745-775 nm). These switches are intended for use in... Read More about Near infrared integrated photonic switches for portable quantum sensors.

Machine learning time-local generators of open quantum dynamics (2021)
Journal Article
Mazza, P. P., Zietlow, D., Carollo, F., Andergassen, S., Martius, G., & Lesanovsky, I. (2021). Machine learning time-local generators of open quantum dynamics. Physical Review Research, 3(2), Article 023084. https://doi.org/10.1103/physrevresearch.3.023084

In the study of closed many-body quantum systems one is often interested in the evolution of a subset of degrees of freedom. On many occasions it is possible to approach the problem by performing an appropriate decomposition into a bath and a system.... Read More about Machine learning time-local generators of open quantum dynamics.

Artificial bee colony algorithm: a novel strategy for optical constants and thin film thickness extraction using only optical transmittance spectra for photovoltaic applications (2021)
Journal Article
Garoudja, E., Amrani, R., Filali, W., Lekoui, F., Oussalah, S., Cuminal, Y., …Henini, M. (2021). Artificial bee colony algorithm: a novel strategy for optical constants and thin film thickness extraction using only optical transmittance spectra for photovoltaic applications. Optik, 241, Article 167030. https://doi.org/10.1016/j.ijleo.2021.167030

An effective approach to determine thin film thickness (d) and optical constants (n, k, α) from transmittance spectrum with interference fringes is proposed. The developed strategy is based on applying the artificial bee colony (ABC) algorithm and... Read More about Artificial bee colony algorithm: a novel strategy for optical constants and thin film thickness extraction using only optical transmittance spectra for photovoltaic applications.

Topological two-dimensional Floquet lattice on a single superconducting qubit (2021)
Journal Article
Malz, D., & Smith, A. (2021). Topological two-dimensional Floquet lattice on a single superconducting qubit. Physical Review Letters, 126(16), Article 163602. https://doi.org/10.1103/PhysRevLett.126.163602

Current noisy intermediate-scale quantum (NISQ) devices constitute powerful platforms for analogue quantum simulation. The exquisite level of control offered by state-of-the-art quantum computers make them especially promising to implement time-depen... Read More about Topological two-dimensional Floquet lattice on a single superconducting qubit.

Use of and attitudes towards herbal medicine during the COVID-19 pandemic: a cross-sectional study in Vietnam (2021)
Journal Article
Nguyen, P. H., De Tran, V., Pham, D. T., Dao, T. N. P., & Dewey, R. S. (2021). Use of and attitudes towards herbal medicine during the COVID-19 pandemic: a cross-sectional study in Vietnam. European Journal of Integrative Medicine, 44, Article 101328. https://doi.org/10.1016/j.eujim.2021.101328

Introduction Herbal medicine has a long and rich history of practice in Vietnam. However, research on this topic is limited, especially in relation to the COVID-19 pandemic. This study aimed to explore (1) the prevalence and indication for herbal... Read More about Use of and attitudes towards herbal medicine during the COVID-19 pandemic: a cross-sectional study in Vietnam.

Higher-order and fractional discrete time crystals in clean long-range interacting systems (2021)
Journal Article
Pizzi, A., Knolle, J., & Nunnenkamp, A. (2021). Higher-order and fractional discrete time crystals in clean long-range interacting systems. Nature Communications, 12(1), Article 2341. https://doi.org/10.1038/s41467-021-22583-5

Discrete time crystals are periodically driven systems characterized by a response with periodicity nT, with T the period of the drive and n > 1. Typically, n is an integer and bounded from above by the dimension of the local (or single particle) Hil... Read More about Higher-order and fractional discrete time crystals in clean long-range interacting systems.

Orbitofrontal control of conduct problems? Evidence from healthy adolescents processing negative facial affect (2021)
Journal Article
Böttinger, B. W., Baumeister, S., Millenet, S., Barker, G. J., Bokde, A. L. W., Büchel, C., …IMAGEN Consortium. (2021). Orbitofrontal control of conduct problems? Evidence from healthy adolescents processing negative facial affect. European Child and Adolescent Psychiatry, https://doi.org/10.1007/s00787-021-01770-1

Conduct problems (CP) in patients with disruptive behavior disorders have been linked to impaired prefrontal processing of negative facial affect compared to controls. However, it is unknown whether associations with prefrontal activity during affect... Read More about Orbitofrontal control of conduct problems? Evidence from healthy adolescents processing negative facial affect.

Recovering the origins of the lenticular galaxy NGC 3115 using multiband imaging (2021)
Journal Article
Buzzo, M. L., Cortesi, A., Hernandez-Jimenez, J. A., Coccato, L., Werle, A., Beraldo e Silva, L., …Mendes de Oliveira, C. (2021). Recovering the origins of the lenticular galaxy NGC 3115 using multiband imaging. Monthly Notices of the Royal Astronomical Society, 504(2), 2146-2167. https://doi.org/10.1093/mnras/stab941

A detailed study of the morphology of lenticular galaxies is an important way to understand how this type of galaxy is formed and evolves over time. Decomposing a galaxy into its components (disc, bulge, bar, ...) allows recovering the colour gradien... Read More about Recovering the origins of the lenticular galaxy NGC 3115 using multiband imaging.

An analytical model to kinematically identify thin discs in MaNGA galaxies (2021)
Journal Article
Bershady, M. A., Weijmans, A.-M., Yang, M., Boardman, N. F., Merrifield, M., & Drory, N. (2021). An analytical model to kinematically identify thin discs in MaNGA galaxies. Monthly Notices of the Royal Astronomical Society, 504(2), 2658-2669. https://doi.org/10.1093/mnras/stab1049

We present an analytical model to identify thin discs in galaxies, and apply this model to a sample of SDSS MaNGA galaxies. This model fits the velocity and velocity dispersion fields of galaxies with regular kinematics. By introducing two parameters... Read More about An analytical model to kinematically identify thin discs in MaNGA galaxies.

Thermodynamic bounds on coherent transport in periodically driven conductors (2021)
Journal Article
Potanina, E., Flindt, C., Moskalets, M., & Brandner, K. (2021). Thermodynamic bounds on coherent transport in periodically driven conductors. Physical Review X, 11(2), 1-26. https://doi.org/10.1103/physrevx.11.021013

Periodically driven coherent conductors provide a universal platform for the development of quantum transport devices. Here, we lay down a comprehensive theory to describe the thermodynamics of these systems. We first focus on moderate thermoelectric... Read More about Thermodynamic bounds on coherent transport in periodically driven conductors.

Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals (2021)
Journal Article
Burley, C. V., Francis, S. T., Thomas, K. N., Whittaker, A. C., Lucas, S. J., & Mullinger, K. J. (2021). Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals. Frontiers in Physiology, 12, Article 656746. https://doi.org/10.3389/fphys.2021.656746

Cerebrovascular reactivity (CVR) is used as an outcome measure of brain health. Traditionally, lower CVR is associated with ageing, poor fitness and brain-related conditions (e.g. stroke, dementia). Indeed, CVR is suggested as a biomarker for disease... Read More about Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals.

Measurement-feedback control of the chiral photon emission from an atom chain into a nanofiber (2021)
Journal Article
Buonaiuto, G., Lesanovsky, I., & Olmos, B. (2021). Measurement-feedback control of the chiral photon emission from an atom chain into a nanofiber. Journal of the Optical Society of America B, 38(5), 1470-1476. https://doi.org/10.1364/josab.422893

We theoretically investigate measurement-based feedback control of a laser-driven one-dimensional atomic chain interfaced with a nanofiber. The interfacing leads to all-to-all interactions among the atomic emitters and induces chirality, i.e. the dir... Read More about Measurement-feedback control of the chiral photon emission from an atom chain into a nanofiber.

Numerical simulation of quantum nonequilibrium phase transitions without finite-size effects (2021)
Journal Article
Gillman, E., Carollo, F., & Lesanovsky, I. (2021). Numerical simulation of quantum nonequilibrium phase transitions without finite-size effects. Physical Review A, 103(4), Article L040201. https://doi.org/10.1103/physreva.103.l040201

Classical (1 + 1)D cellular automata, as for instance Domany-Kinzel cellular automata, are paradigmatic systems for the study of non-equilibrium phenomena. Such systems evolve in discrete time-steps, and are thus free of time-discretisation errors. M... Read More about Numerical simulation of quantum nonequilibrium phase transitions without finite-size effects.

Gender issues in fundamental physics: Strumia’s bibliometric analysis fails to account for key confounders and confuses correlation with causation (2021)
Journal Article
Ball, P., Britton, T. B., Hengel, E., Moriarty, P., Oliver, R. A., Rippon, G., …Wade, J. (2021). Gender issues in fundamental physics: Strumia’s bibliometric analysis fails to account for key confounders and confuses correlation with causation. Quantitative Science Studies, 2(1), 263-272. https://doi.org/10.1162/qss_a_00117

Alessandro Strumia recently published a survey of gender differences in publications and citations in high-energy physics (HEP). In addition to providing full access to the data, code, and methodology, Strumia (2020) systematically describes and acco... Read More about Gender issues in fundamental physics: Strumia’s bibliometric analysis fails to account for key confounders and confuses correlation with causation.

Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system (2021)
Journal Article
Brookes, M. J., Boto, E., Rea, M., Shah, V., Osborne, J., Holmes, N., …Bowtell, R. (2021). Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system. NeuroImage, 236, Article 118025. https://doi.org/10.1016/j.neuroimage.2021.118025

The optically pumped magnetometer (OPM) is a viable means to detect magnetic fields generated by human brain activity. Compared to conventional detectors (superconducting quantum interference devices) OPMs are small, lightweight, flexible, and operat... Read More about Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system.

Theoretical uncertainties for cosmological first-order phase transitions (2021)
Journal Article
Croon, D., Gould, O., Schicho, P., Tenkanen, T. V., & White, G. (2021). Theoretical uncertainties for cosmological first-order phase transitions. Journal of High Energy Physics, 2021(4), Article 55. https://doi.org/10.1007/JHEP04%282021%29055

We critically examine the magnitude of theoretical uncertainties in perturbative calculations of fist-order phase transitions, using the Standard Model effective field theory as our guide. In the usual daisy-resummed approach, we find large uncertain... Read More about Theoretical uncertainties for cosmological first-order phase transitions.

Quantum jump Monte Carlo approach simplified: Abelian symmetries (2021)
Journal Article
Macieszczak, K., & Rose, D. C. (2021). Quantum jump Monte Carlo approach simplified: Abelian symmetries. Physical Review A, 103(4), Article 042204. https://doi.org/10.1103/physreva.103.042204

We consider Markovian dynamics of a finitely dimensional open quantum system featuring a weak unitary symmetry, i.e., when the action of a unitary symmetry on the space of density matrices commutes with the master operator governing the dynamics. We... Read More about Quantum jump Monte Carlo approach simplified: Abelian symmetries.

Real scalar phase transitions: a nonperturbative analysis (2021)
Journal Article
Gould, O. (2021). Real scalar phase transitions: a nonperturbative analysis. Journal of High Energy Physics, 2021(04), Article 57. https://doi.org/10.1007/JHEP04%282021%29057

We study the thermal phase transitions of a generic real scalar field, without a Z2-symmetry, referred to variously as an inert, sterile or singlet scalar, or ϕ3 + ϕ4 theory. Such a scalar field arises in a wide range of models, including as the infl... Read More about Real scalar phase transitions: a nonperturbative analysis.

Theoretical uncertainties for cosmological first-order phase transitions (2021)
Journal Article
Croon, D., Gould, O., Schicho, P., Tenkanen, T. V. I., & White, G. (2021). Theoretical uncertainties for cosmological first-order phase transitions. Journal of High Energy Physics, 2021(4), Article 55. https://doi.org/10.1007/JHEP04%282021%29055

We critically examine the magnitude of theoretical uncertainties in perturbative calculations of fist-order phase transitions, using the Standard Model effective field theory as our guide. In the usual daisy-resummed approach, we find large uncertain... Read More about Theoretical uncertainties for cosmological first-order phase transitions.