scholarly journals Canonical loop quantization of the lowest-order projectable Horava gravity

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Xiangdong Zhang ◽  
Jinsong Yang ◽  
Yongge Ma
Keyword(s):  
Horava Gravity ◽  
Loop Quantization

scholarly journals Loop quantization of spherically symmetric midi-superspaces : the interior problem

2008 ◽  
Author(s):  
Miguel Campiglia ◽  
Rodolfo Gambini ◽  
Jorge Pullin ◽  
Alfredo Macias ◽  
Claus Lämmerzahl ◽  
...  
Keyword(s):  
Spherically Symmetric ◽  
Interior Problem ◽  
Loop Quantization

scholarly journals Polymer quantum effects on compact stars models

2015 ◽  
Vol 24 (05) ◽  
pp. 1550033 ◽  
Author(s):  
Guillermo Chacón-Acosta ◽  
Héctor H. Hernandez-Hernandez
Keyword(s):  
Semiclassical Approximation ◽  
Generalized Uncertainty Principle ◽  
Compact Object ◽  
Compact Stars ◽  
One Dimensional ◽  
Degenerate Fermi Gas ◽  
Mechanical Models ◽  
Degeneracy Pressure ◽  
Loop Quantization ◽  
Bose Einstein

In this work we study a completely degenerate Fermi gas at zero temperature by a semiclassical approximation for a Hamiltonian that arises in polymer quantum mechanics. Polymer quantum systems are quantum mechanical models quantized in a similar way as in loop quantum gravity, allowing the study of the discreteness of space and other features of the loop quantization in a simplified way. We obtain the polymer modified thermodynamical properties for this system by noticing that the corresponding Fermi energy is exactly the same as if one directly polymerizes the momentum pF. We also obtain the expansion of the corresponding thermodynamical variables in terms of small values of the polymer length scale λ. We apply these results to study a simple model of a compact one-dimensional star where the gravitational collapse is supported by electron degeneracy pressure. As a consequence, polymer corrections to the mass of the object are found. By using bounds for the polymer length found in Bose–Einstein condensates experiments we compute the modification in the mass of the compact object due to polymer effects of order ~ 10-8. This result is similar to the other order found by different approaches such as generalized uncertainty principle (GUP), and that certainly is within the error reported in typical measurements of white dwarf masses.

scholarly journals Birkhoff’s theorem in Hořava gravity

2019 ◽  
Vol 99 (10) ◽  
Author(s):  
Deniz O. Devecioğlu ◽  
Mu-In Park
Keyword(s):  
Horava Gravity ◽  
Birkhoff's Theorem ◽  
Birkhoff’S Theorem

scholarly journals Solutions to Hořava Gravity

2009 ◽  
Vol 103 (9) ◽  
Author(s):  
H. Lü ◽  
Jianwei Mei ◽  
C. N. Pope
Keyword(s):  
Horava Gravity
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