Outputs (253)

The Lyman α forest power spectrum from the XQ-100 legacy survey (2016)
Journal Article
Irsic, V., Viel, M., Berg, T. A., D'Odorico, V., Haehnelt, M. G., Cristiani, S., …Bolton, J. S. (2016). The Lyman α forest power spectrum from the XQ-100 legacy survey. Monthly Notices of the Royal Astronomical Society, 466(4), 4332-4345. https://doi.org/10.1093/mnras/stw3372

We present the Lyman α flux power spectrum measurements of the XQ-100 sample of quasar spectra obtained in the context of the European Southern Observatory Large Programme ‘Quasars and their absorption lines: a legacy survey of the high redshift univ... Read More about The Lyman α forest power spectrum from the XQ-100 legacy survey.

Mechano-chemical manipulation of Sn chains on Si(1 0 0) by NC-AFM (2016)
Journal Article
Sweetman, A., Lekkas, I., & Moriarty, P. (2016). Mechano-chemical manipulation of Sn chains on Si(1 0 0) by NC-AFM. Journal of Physics: Condensed Matter, 29(7), Article 074003. https://doi.org/10.1088/1361-648X/29/7/074003

We investigate the atomic structure of Sn dimer chains grown on the Si(1 0 0) surface using non-contact atomic force microscopy (NC-AFM) at cryogenic temperatures. We find that similar to the native Si(1 0 0) dimer structure, the ground state of the... Read More about Mechano-chemical manipulation of Sn chains on Si(1 0 0) by NC-AFM.

Dynamical scalar hair formation around a Schwarzschild black hole (2016)
Journal Article
Benkel, R., Sotiriou, T. P., & Witek, H. (2016). Dynamical scalar hair formation around a Schwarzschild black hole. Physical Review D, 94(12), https://doi.org/10.1103/PhysRevD.94.121503

Scalar fields coupled to the Gauss-Bonnet invariant evade the known no-hair theorems and have nontrivial configurations around black holes. We focus on a scalar field that couples linearly to the Gauss-Bonnet invariant and hence exhibits shift symmet... Read More about Dynamical scalar hair formation around a Schwarzschild black hole.

Constraining symmetron fields with atom interferometry (2016)
Journal Article
Burrage, C., Kuribayashi-Coleman, A., Stevenson, J., & Thrussell, B. (2016). Constraining symmetron fields with atom interferometry. Journal of Cosmology and Astroparticle Physics, 2016, Article 041. https://doi.org/10.1088/1475-7516/2016/12/041

We apply the new constraints from atom-interferometry searches for screening mechanisms to the symmetron model, finding that these experiments exclude a previously unexplored region of the parameter space. We discuss the possibility of networks of do... Read More about Constraining symmetron fields with atom interferometry.

Stretching and Kibble scaling regimes for Hubble-damped defect networks (2016)
Journal Article
Martins, C., Rybak, I. Y., Avgoustidis, A., & Shellard, E. (2016). Stretching and Kibble scaling regimes for Hubble-damped defect networks. Physical Review D, 94(11), Article 116017. https://doi.org/10.1103/PhysRevD.94.116017

The cosmological evolution of topological defect networks can broadly be divided into two stages. At early times they are friction dominated due to particle scattering and therefore nonrelativistic and may either be conformally stretched or evolve in... Read More about Stretching and Kibble scaling regimes for Hubble-damped defect networks.

VALES. II. The physical conditions of interstellar gas in normal star-forming galaxies up to z=0.2 revealed by ALMA (2016)
Journal Article
Hughes, T., Ibar, E., Villanueva, V., Aravena, M., Baes, M., Bourne, N., …Xue, Y. (2016). VALES. II. The physical conditions of interstellar gas in normal star-forming galaxies up to z=0.2 revealed by ALMA. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/201629588

We use new Band 3 CO(1–0) observations taken with the Atacama Large Millimeter/submillimeter Array (ALMA) to study the physical conditions in the interstellar gas of a sample of 27 dusty main-sequence star-forming galaxies at 0:03 < z < 0:2 present i... Read More about VALES. II. The physical conditions of interstellar gas in normal star-forming galaxies up to z=0.2 revealed by ALMA.

The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals (2016)
Journal Article
Mudd, G., Molas, M., Chen, X., Zólyomi, V., Nogajewski, K., Kudrynskyi, Z. R., …Patanè, A. (2016). The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals. Scientific Reports, 6(1), Article 39619. https://doi.org/10.1038/srep39619

The electronic band structure of van der Waals (vdW) layered crystals has properties that depend on the composition, thickness and stacking of the component layers. Here we use density functional theory and high field magneto-optics to investigate th... Read More about The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals.

Investigation of electrically active defects in InGaAs quantum wire intermediate-band solar cells using deep-level transient spectroscopy (DLTS) technique (2016)
Journal Article
Al Saqri, N. A., Felix, J. F., Aziz, M., Kunets, V. P., Jameel, D. A., Taylor, D., …Salamo, G. (in press). Investigation of electrically active defects in InGaAs quantum wire intermediate-band solar cells using deep-level transient spectroscopy (DLTS) technique. Nanotechnology, 28(4), https://doi.org/10.1088/1361-6528/28/4/045707

InGaAs quantum wire (QWr) intermediate-band solar cell based nanostructures grown by molecular beam epitaxy are studied. The electrical and interface properties of these solar cell devices, as determined by current–voltage (I–V) and capacitance–volta... Read More about Investigation of electrically active defects in InGaAs quantum wire intermediate-band solar cells using deep-level transient spectroscopy (DLTS) technique.

Prethermalization from a low-density Holstein-Primakoff expansion (2016)
Journal Article
Marcuzzi, M., Marino, J., Gambassi, A., & Silva, A. (2016). Prethermalization from a low-density Holstein-Primakoff expansion. Physical Review B, 94, Article 214304. https://doi.org/10.1103/PhysRevB.94.214304

We consider the non-equilibrium dynamics arising after a quench of the transverse magnetic field of a quantum Ising chain, together with the sudden switch-on of a long-range interaction term. The dynamics after the quantum quench is mapped onto a ful... Read More about Prethermalization from a low-density Holstein-Primakoff expansion.

Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth (2016)
Journal Article
Planck Collaboration, Aghanim, N., Ashdown, M., Aumont, J., Baccigalupi, C., Ballardini, M., …Zonca, A. (2016). Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth. Astronomy and Astrophysics, 596, Article A107. https://doi.org/10.1051/0004-6361/201628890

This paper describes the identification, modelling, and removal of previously unexplained systematic effects in the polarization data of the Planck High Frequency Instrument (HFI) on large angular scales, including new mapmaking and calibration proce... Read More about Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth.