In the covariant-gauge two-dimensional quantumgravity, various derivations of the critical dimensionD=26 of the bosonic string are critically reviewed, andtheir interrelations are clarified. It is shown that the string theoryis not identical with the proper framework of thetwo-dimensional quantum ...
Classical and Quantum GravityThiemann T 2004 The LQG string: loop quantum gravity quantization of string theory: I. Flat target space Preprint hep-th/0401172T. Thiemann, The LQG - String: Loop Quantum Gravity Quantization of String Theory I. Flat Target Space, hep-th/0401172....
Page 3 of 9 - String Theory Update - posted in Science! Astronomy & Space Exploration, and Others: Every theory that are mathematically coherents but not refuted yet should be equally considerated then. To put all the eggs in the same basket is not a w
1-FIELD THEORETICAL APPROACH TO QUANTUM GRAVITY: Linearized gravity; Supergravity; Kaluza-Klein theories; Quantum field theory and classical gravity; Euclidean approach to Quantum Gravity; Canonical quantization of gravity; Gravitational Instantons. 2-CONSISTENCY CONDITIONS: ANOMALIES: Generalities about ...
I investigate two discrete models of random geometries, namely simplicial quantum gravity and quantum string theory. In four-dimensional simplicial quantum gravity, I show that the addition of matter gauge fields to the model is capable of changing its phase structure by replacing the branched ...
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S. Kar, Naked singularities in low-energy, effective string theory. Class. Quantum Gravity 16, 101–115 (1999). https://doi.org/10. 1088/0264-9381/16/1/008. arXiv:hep-th/9804039 21. P. Wang, H. Wu, H. Yang, S. Ying, Non-singular string cosmology via α corrections. JHEP ...
Quantum Gravity, Generalized Theory of Gravitation and Superstring Theory-Based Unification 作者:Behram Kursunoglu/Stephan L·Mintz/Arnold Perlmutter 出版社:Springer 出版年:2000-11-30 页数:251 定价:USD 205.00 装帧:Hardcover ISBN:9780306464850 豆瓣评分...
This agrees with the findings of several older papers about self-dual gravity and the connection to loop quantum gravity and the Palatini action [7,8,9]. However, in the maximal symmetric case we can take a different route to string theory by the interpretation of the theta-vacuum structure...
The unified theory of string and two-dimensional quantum gravity is considered. The action for two-dimensional gravity is choosen in a well-known induced form and thus gravity posesses it's oun nontrivial dynamics even on the classical level. Three classically equivalent forms of the action of...