Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radiation back reaction on moving branes   This paper addresses the radiation back reaction problem for cosmological
branes. A general framework is provided in which results are given for the
radiation reaction with massles and massive scalar fields with flat extra
dimensions and massless conformal fields in anti-de Sitter extra dimensions.
For massless scalar field radiation the back reaction terms in the equation of
motion are non-analytic. The interpretation of the radiation reaction terms is
discussed and the equations of motion solved in simple cases. Nucleosynthesis
bounds on dark radiation give a lower bound on the string vacuum energy scale
of $\sqrt{A_T} m_p$, where $A_T$ is the tensor perturbation amplitude in the
cosmic microwave background.

23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math