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Publications Influence

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

- M. Actis, G. Agnetta, +497 authors C. Rulten
- Physics
- 23 November 2011

Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. Ground-based gamma-ray astronomy has a… Expand

699 45- PDF

Turning big bang into big bounce: II. Quantum dynamics

- P. Małkiewicz, W. Piechocki
- Physics
- 27 August 2009

We analyze the big bounce transition of the quantum Friedmann–Robertson–Walker model in the setting of the nonstandard loop quantum cosmology (LQC). Elementary observables are used to quantize… Expand

36 1- PDF

Turning big bang into big bounce. I. Classical dynamics

- P. Dzierzak, P. Małkiewicz, W. Piechocki
- Physics
- 20 July 2009

The big bounce (BB) transition within a flat Friedmann-Robertson-Walker model is analyzed in the setting of loop geometry underlying the loop cosmology. We solve the constraint of the theory at the… Expand

44 1- PDF

Probing the cosmological singularity with a particle

- P. Małkiewicz, W. Piechocki
- Physics
- 21 June 2006

We examine the transition of a particle across the singularity of the compactified Milne (CM) space. Quantization of the phase space of a particle and testing the quantum stability of its dynamics… Expand

8 1- PDF

Smooth Big Bounce from Affine Quantization

- H. Bergeron, A. Dapor, J. Gazeau, P. Małkiewicz
- Physics
- 3 May 2013

We examine the possibility of dealing with gravitational singularities on a quantum level through the use of coherent state or wavelet quantization in- stead of canonical quantization. We consider… Expand

34- PDF

Reduced phase space approach to Kasner universe and the problem of time in quantum theory

- P. Małkiewicz
- Physics
- 30 May 2011

We apply the reduced phase space quantization to the Kasner universe. We construct the kinematical phase space, find solutions to the Hamilton equations of motion, identify Dirac observables and… Expand

18- PDF

Singularity avoidance in a quantum model of the Mixmaster universe

- H. Bergeron, E. Czuchry, J. Gazeau, P. Małkiewicz, W. Piechocki
- Physics
- 30 January 2015

We present a quantum model of the vacuum Bianchi-IX dynamics. It is based on four main elements. First, we use a compound quantization procedure: an affine coherent state quantization for isotropic… Expand

21- PDF

Darboux transformations for q-discretizations of 2D second order differential equations

- P. Małkiewicz, M. Nieszporski
- Mathematics
- 1 January 2005

Abstract We present q-discretizations of a second order differential equation in two independent variables that not only go to the differential counterpart as q goes to 1 but admit Moutard-Darboux… Expand

3- PDF

Multiple choices of time in quantum cosmology

- P. Małkiewicz
- Physics
- 13 July 2014

It is often conjectured that a choice of time function merely sets up a frame for the quantum evolution of the gravitational field, meaning that all choices should be in some sense compatible. In… Expand

20- PDF

Smooth quantum dynamics of the mixmaster universe

- H. Bergeron, E. Czuchry, J. Gazeau, P. Małkiewicz, W. Piechocki
- Physics
- 9 January 2015

We present a quantum version of the vacuum Bianchi IX model by implementing ane coherent state quantization combined with a Born-Oppenheimer-like adiabatic approximation. The analytical treatment is… Expand

21- PDF