185,104 research outputs found
Gauge bosons and the AdS_3/LCFT_2 correspondence
We study the relationship between the gauge boson coupled to spin 2 operator
and the singleton in three-dimensional anti-de Sitter space(AdS). The
singleton can be expressed in terms of a pair of dipole ghost fields and
which couple to and operators on the boundary of AdS. These
operators form the logarithmic conformal field theory(LCFT). Using the
correlation function for logarithmic pair, we calculate the greybody factor for
the singleton. In the low temperature limit of , this is
compared with the result of the bulk AdS calculation of the gauge boson. We
find that the gauge boson cannot be realized as a model of the AdS/LCFT
correspondence.Comment: 9 pages, no figures, previous version should be replaced with this,
the result was reverse
Spectator Behavior in a Quantum Hall Antidot with Multiple Bound Modes
We theoretically study Aharonov-Bohm resonances in an antidot system with
multiple bound modes in the integer quantum Hall regime, taking capacitive
interactions between the modes into account. We find the spectator behavior
that the resonances of some modes disappear and instead are replaced by those
of other modes, due to internal charge relaxation between the modes. This
behavior is a possible origin of the features of previous experimental data
which remain unexplained, spectator behavior in an antidot molecule and
resonances in a single antidot with three modes.Comment: 4 pages, 3 figures, to be published in Physical Review Letter
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