Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The XX-model with boundaries. Part II: Finite size scaling and partition
  functions   We compute the continuum limit of the spectra for the XX-model with arbitrary
complex boundary fields. In the case of hermitian boundary terms one obtains
the partition functions of the free compactified boson field on a cylinder with
Neumann-Neumann, Dirichlet-Neumann or Dirichlet-Dirichlet boundary conditions.
This applies also for certain non-hermitian boundaries. For special cases we
also compute the free surface energy. For certain non-hermitian boundary terms
the results are more complex.Here one obtains logarithmic corrections to the
free surface energy. The asymmetric version of the XX-model with boundaries
(this includes the Dzyaloshinsky-Moriya interaction)is also discussed.

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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: econ