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Shower Center of Gravity and Hadronic Interaction Characteristics
Shower Center Gravity Hadronic Interaction Characteristics
2012/2/23
Equations for the center of gravity of the shower originated by high energy proton in the atmosphere are written and, within certain simplifications, solved for the case of logarithmically decreasing ...
Asymptotically safe gravity as a scalar-tensor theory and its cosmological implications
Asymptotically gravity scalar-tensor theory cosmological implications
2011/10/14
We study asymptotically safe gravity with Einstein-Hilbert truncation taking into account the renormalization group running of both gravitational and cosmological constants. We show the classical beha...
Energy Extraction and Particle Acceleration Around Rotating Black Hole in Horava-Lifshitz Gravity
Energy Extraction Particle Acceleration Around Rotating Horava-Lifshitz Gravity
2011/10/17
Penrose process on rotational energy extraction of the black hole (BH) in the original non-projectable Ho\v{r}ava-Lifshitz gravity is studied. The strong dependence of the extracted energy from the sp...
Vainshtein mechanism in Gauss-Bonnet gravity and Galileon aether
Vainshtein mechanism Gauss-Bonnet gravity Galileon aether
2011/10/18
We derive field equations of Gauss-Bonnet gravity in 4 dimensions after dimensional reduction of the action and demonstrate that in this scenario Vainshtein mechanism operates in the flat spherically ...
Generalized from the so-called teleparallel gravity which is exactly equivalent to general relativity, the $f(T)$ gravity has been proposed as an alternative gravity model to account for the dark ener...
Violation of the first law of black hole thermodynamics in $f(T)$ gravity
Violation first law black hole thermodynamics $f(T)$ gravity
2011/10/18
We prove that the first law of black hole thermodynamics, $\delta Q=T\delta S$, is violated in $f(T)$ gravity. As a result, there always exists entropy production, which implies that the black hole th...
Large Scale Structures in Kinetic Gravity Braiding Model
Large Scale Structures Kinetic Gravity Braiding Model
2010/11/12
We study cosmological consequences of a kinetic braiding model, which is proposed as an alternative to the dark energy model. The kinetic braiding model we study is characterised by a parameter n, whi...
Modified gravity emerging from thermodynamics and holographic principle
law of entropy thermodynamics holographic principle
2010/3/19
We discuss three different corrections to the area law of entropy. The number of bits $N$ is then modified according to the form of entropy, and the law of gravity is obtained by using the method deve...