Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interactions and Interference in Quantum Dots: Kinks in Coulomb Blockade
  Peak Positions   We investigate the spin of the ground state of a geometrically confined
many-electron system. For atoms, shell structure simplifies this problem-- the
spin is prescribed by the well-known Hund's rule. In contrast, quantum dots
provide a controllable setting for studying the interplay of quantum
interference and electron-electron interactions in general cases. In a generic
confining potential, the shell-structure argument suggests a singlet ground
state for an even number of electrons. The interaction among the electrons
produces, however, accidental occurrences of spin-triplet ground states, even
for weak interaction, a limit which we analyze explicitly. Variaton of an
external parameter causes sudden switching between these states and hence a
kink in the conductance. Experimental study of these kinks would yield the
exchange energy for the ``chaotic electron gas''.

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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol