@article{ISI:000269198900020,
 abstract = {We present a microscopic model for calculating the AC conductivity of a
finite length line junction made up of two counter-or co-propagating
single mode quantum Hall edges with possibly different filling
fractions. The effect of density-density interactions and a local
tunneling conductance (sigma) between the two edges is considered.
Assuming that sigma is independent of the frequency omega, we derive
expressions for the AC conductivity as a function of omega, the length
of the line junction and other parameters of the system. We reproduce
the results of Sen and Agarwal (2008 Phys. Rev. B 78 085430) in the DC
limit (omega -> 0), and generalize those results for an interacting
system. As a function of omega, the AC conductivity shows significant
oscillations if sigma is small; the oscillations become less prominent
as sigma increases. A renormalization group analysis shows that the
system may be in a metallic or an insulating phase depending on the
strength of the interactions. We discuss the experimental implications
of this for the behavior of the AC conductivity at low temperatures.},
 article-number = {375601},
 author = {Agarwal, Amit and Sen, Diptiman},
 doi = {10.1088/0953-8984/21/37/375601},
 issn = {0953-8984},
 journal = {JOURNAL OF PHYSICS-CONDENSED MATTER},
 month = {SEP 16},
 number = {37},
 orcid-numbers = {Agarwal, Amit/0000-0001-6399-7264},
 researcherid-numbers = {Agarwal, Amit/G-8580-2011
},
 times-cited = {2},
 title = {AC conductivity of a quantum Hall line junction},
 unique-id = {ISI:000269198900020},
 volume = {21},
 year = {2009}
}