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We show that theory predictions for volume reflection in bent crystals agree with recent experimental data. This makes possible to predict volume reflection angle and efficiency in a broad range of energy for various crystals. A simple…

Accelerator Physics · Physics 2010-11-11 V. M. Biryukov

The question raised by [Bastin and Martin 2003 J. Phys. B: At. Mol. Opt. Phys. 36, 4201] is examined and used to explain in more detail a key point of our calculations. They have sought to rebut criticisms raised by us of certain techniques…

Quantum Physics · Physics 2009-11-10 M. Abdel-Aty , A. -S. F. Obada

We stand by our findings in Phys. Rev A. 96, 022126 (2017). In addition to refuting the invalid objections raised by Peleg and Vaidman, we report a retrocausation problem inherent in Vaidman's definition of the past of a quantum particle.

Quantum Physics · Physics 2019-03-06 Berthold-Georg Englert , Kelvin Horia , Jibo Dai , Yink Loong Len , Hui Khoon Ng

Dark matter interacts gravitationally, but it presumably interacts weakly through other channels, especially with respect to regular luminous matter. We look at different ways in which dark matter may couple to other fields. We briefly…

General Physics · Physics 2018-09-27 Kevin J. Ludwick

A comment on the preprint "Towards a quantitative kinetic theory of polar active matter" by T. Ihle, arXiv:1401.8056.

In this paper we review the main theoretical and experimental achievements in the field of Dark Matter from the Cosmological and Astrophysical point of view. We revisit it from the very first surveys of local astrophysical matter, up to the…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-14 Vladimir Lukovic , Paolo Cabella , Nicola Vittorio

In a recent preprint, arXiv 2005.03716v1, G. Wegner and C. Henkel criticized my work on the possibility of lossless surface plasma waves. Here I refute all of their criticisms.

Mesoscale and Nanoscale Physics · Physics 2020-09-15 Hai-Yao Deng

We study diffuse gamma-ray emission at intermediate Galactic latitudes measured by the Fermi Large Area Telescope with the aim of searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal,…

High Energy Astrophysical Phenomena · Physics 2013-04-10 G. Zaharijas , J. Conrad , A. Cuoco , Z. Yang

A Comment on the Letter by C. R. Galley, Phys. Rev. Lett. 110, 174301 (2013).

Mathematical Physics · Physics 2015-03-02 Epifanio G. Virga

We briefly remind references and arguments, already discussed in the past, which confute erroneous claims in arXiv:1210.5501.

The AMS experiment onboard the International Space Station has recently provided cosmic ray electron and positron data with unprecedented precision in the range from 0.5 to 350 GeV. The observed rise in the positron fraction at energies…

High Energy Astrophysical Phenomena · Physics 2013-10-29 Lars Bergstrom , Torsten Bringmann , Ilias Cholis , Dan Hooper , Christoph Weniger

Reply to the Comment physics/0307134 by A. Helmstetter and D. Sornette

Some formulas and speculations are presented relative to integrable systems and quantum mechanics.

High Energy Physics - Theory · Physics 2007-05-23 Robert Carroll

I review recent developments in the direct and indirect detection of dark matter and new candidates beyond the WIMP paradigm.

High Energy Physics - Phenomenology · Physics 2010-01-15 Jonathan L. Feng

I discuss the use of light as a collection of real and virtual photons to study lingering questions in particle and nuclear physics.

Nuclear Theory · Physics 2015-06-23 C. A. Bertulani

We address the question of gravitino dark matter in the context of gauge mediated supersymmetry breaking models.

High Energy Physics - Phenomenology · Physics 2007-12-21 G. Moultaka

These lectures are intended to provide a brief pedagogical review of dark matter for the newcomer to the subject. We begin with a discussion of the astrophysical evidence for dark matter. The standard weakly-interacting massive particle…

Cosmology and Nongalactic Astrophysics · Physics 2009-07-14 Guido D'Amico , Marc Kamionkowski , Kris Sigurdson

Empirical mass estimates for galactic dark matter objects, published between December 1991 and May 1999, are presented in tabular and graphical forms. Trends in the data are identified and uncertainties are discussed. Similarities among…

Astrophysics · Physics 2007-05-23 Robert L. Oldershaw