3.1 The KLT relations in Perturbative Quantum Gravity and its 2.3 Gravity and gauge theory

3 The Kawai-Lewellen-Tye Relations 

Our starting point for constructing perturbative quantum gravity is the Kawai, Lewellen, and Tye (KLT) relations [85Jump To The Next Citation Point In The Article] between closed and open string tree-level amplitudes. Since closed string theories are theories of gravity and open string theories include gauge bosons, in the low energy limit, where string theory reduces to field theory, these relations then necessarily imply relations between gravity and gauge theories. The realization that ordinary gauge and gravity field theories emerge from the low energy limit of string theories has been appreciated for nearly three decades. (See, for example, Refs. [144, 118, 117Jump To The Next Citation Point In The Article, 69Jump To The Next Citation Point In The Article, 70Jump To The Next Citation Point In The Article, 110Jump To The Next Citation Point In The Article, 111Jump To The Next Citation Point In The Article].)





3.1 The KLT relations in Perturbative Quantum Gravity and its 2.3 Gravity and gauge theory

image Perturbative Quantum Gravity and its Relation to Gauge Theory
Zvi Bern
http://www.livingreviews.org/lrr-2002-5
© Max-Planck-Gesellschaft. ISSN 1433-8351
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