Noncommutativity , Extra Dimensions , and Power Law Running in the Infrared

  title={Noncommutativity , Extra Dimensions , and Power Law Running in the Infrared},
  author={Steven Abel and Joerg Jaeckel and Valentin V. Khoze and Andreas Ringwald},
We investigate the running gauge couplings of U(N) noncommutative gauge theories with compact extra dimensions. Power law running of the trace-U(1) gauge coupling in the ultraviolet is communicated to the infrared by ultraviolet/infrared mixing, whereas the SU(N) factors run exactly as in the commutative theory. This results in theories where the experimentally excluded trace-U(1) factors decouple with a power law running of the momentum in the extreme infrared, effectively hiding them from… CONTINUE READING