Tunneling into a Fractional Quantum Hall System and the Infrared Catastrophe
نویسندگان
چکیده
We calculate the tunneling density of states of a two-dimensional interacting electron gas in a quantizing magnetic field. We show that the observed pseudogap in the density of states can be understood as the result of an infrared catastrophe in a noninteracting electron model. This catastrophe stems from the response of an electronic system to the potential produced by the abruptly added charge during a tunneling event. Our formalism can be applied at any filling factor without the use of Chern-Simons or composite fermion theory.
منابع مشابه
Tunneling into a quantum Hall system and the infrared catastrophe
Abstract We calculate the tunneling density of states for a two-dimensional interacting electron gas in a quantizing magnetic field. We show that the observed pseudogap in the density of states of the lowest Landau level can be regarded to be a consequence of an infrared catastrophe, resulting from the response of the electron system to the potential produced by the abruptly added charge during...
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