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Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy
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 aExpand
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Turning big bang into big bounce: II. Quantum dynamics
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 quantizeExpand
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Turning big bang into big bounce. I. Classical dynamics
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 theExpand
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Probing the cosmological singularity with a particle
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 dynamicsExpand
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Smooth Big Bounce from Affine Quantization
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 considerExpand
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Reduced phase space approach to Kasner universe and the problem of time in quantum theory
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 andExpand
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Singularity avoidance in a quantum model of the Mixmaster universe
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 isotropicExpand
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Darboux transformations for q-discretizations of 2D second order differential equations
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-DarbouxExpand
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Multiple choices of time in quantum cosmology
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. InExpand
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Smooth quantum dynamics of the mixmaster universe
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 isExpand
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