28 verified PDFs
... String Theory in a Nutshell. Alex Atanasov. Chapter 2: Classical String Theory ... book) is to show that we have the correct Regge behavior of the Virasoro ...
This means that high-energy stars and the process of gravitational collapse will in general lead to deviations from the 4D general relativity ...
The basic idea of braneworld scenarios is that our observable universe could be a 3+1 dimensional hypersurface. (the brane) embedded in a higher ...
Major insights into the non-perturbative structure of string theory followed from the discovery of non-perturbative duality symmetries of super-string theory.
Both theories are now known to be exceptionally accurate, within the range of phenomena to which they are applied; yet both present us with profound.
Generically, supersymmetry is required in String Theory in order to ensure no physical tachyons appear at vacuum level. Moreover, for solutions in theories.
Abstract: Superstring theory aims to unify gravity with quantum mechanics by positing that fundamental particles are one-dimensional strings whose ...
The simplest (A)dS spacetime is the maximally symmetric spacetime solution of the vacuum Einstein equations with a cosmological constant. The d-dimensional de ...
There are two kinds of strings: open strings and closed strings. • The graviton appears as a vibrational mode of closed strings. • Bosonic strings live in 26 ...
We give classification of these dynamical intersecting brane solutions involving two branes, and discuss the application of these solutions to cosmology and ...
PHYS 483: String Theory I. Problem Set 2 Solutions. Heuristically speaking, the effect of the dilaton coupling in the action has been to add a new vertex.
This lecture presents a brief overview of the early history of string theory and supersymmetry. It describes how the S-matrix theory program for understand-.
Quantum gravity was born as that branch of modern theoretical physics that tries to unify its guiding principles, i.e., quantum mechanics and general relativity ...
Problem: Show that the boundary conditions on an open string are. ηµνδXµ∂σXν = 0. (0.52) at σ = 0,π. Solution: In calculating the Euler-Lagrange ...
The whole construction of the braneworld has been based on the conformal mapping between two flat spaces, this conformal mapping then defines the behavior of ...
The problem with quantum gravity. In addition to these two main research programs, the landscape of quantum gravity has been populated by a host of smaller ...
The problem of unifying quantum mechanics with general relativity in a quantum theory of gravity has led to a proliferation.
Severe challenges have appeared in many quantum theories of gravity. None of these theories has thus far attained its goal in quantizing gravity and some.
This involves explaining how to use topological string to compute F-terms in low energy effective theories of string compactifications, which ...
String theory, a framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings, has been a cornerstone ...
