Cosmology Seminar
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Variability of MgII line in quasars as one step to understand dark energy properties
2016.10.19 19:50 - admin -
Blueshifts from a non-simultaneous Big Bang may explain the gamma ray bursts
2015.11.30 8:31 - admin -
Measuring constancy of the speed of light by cosmological rulers and chronometers
2015.11.13 14:51 - admin -
VHE gamma ray astrophysics and a Polish contribution to the CTA project
2015.09.30 11:11 - admin -
The astrophysical hunt for photon dispersion
2015.05.28 9:00 - adminThe question if the photon velocity varies with its energy has fundamental consequences for physics. The natural way to search for this effect is to observe distant, variable, high energy phenomena in the Universe. I will review the possible objects and their properties, and then summarize the current observational constraints. Finally, I will describe the possible future experiments that may lead to detection of photon dispersion.
E. Czuchry, E. Infeld, W. Piechocki, A. Pollo
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Squeezed states and Hermite Polynomials in a Complex Variable
2015.04.22 14:47 - adminI will construct coherent states, related to the Hermite polynomials in a complex variable which are orthogonal with respect to a non-rotationally invariant measure. Then, I will investigate relations between these coherent states and obtain the relationship between them and the squeezed states of quantum optics. I will also obtain a second realization of the canonical coherent states in the Bargmann space of analytic functions, in terms of a squeezed basis. All this is done in the flavor of the classical approach of V. Bargmann [Comm. Pure Appl. Math. 14 (1961) 187].
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Curvature of the Universe
2014.12.08 14:33 - MarcinSadowskiDuring my talk I will discuss different definitions of curvature and present cosmological constraints on the curvature of our Universe.
E. Czuchry, E. Infeld, W. Piechocki, A. Pollo
