Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational back reaction on piecewise linear cosmic string loops   We calculate the metric and affine connection due to a piecewise linear
cosmic string loop, and the effect of gravitational back reaction for the
Garfinkle-Vachaspati loop with four straight segments. As expected, back
reaction reduces the size of the loop, in accord with the energy going into
gravitational waves. The "square" (maximally symmetric) loop evaporates without
changing shape, but for all other loops in this class, the kinks become less
sharp and segments between kinks become curved. If the loop is close to the
square case, it will evaporate before its kinks are significantly changed, if
it is far from square, the opening out of the kinks is much faster than
evaporation of the loop.

31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th