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Keywords
(12)
Energy Levels
Error Reduction
Excited States
Field Theory
Functional Form
Gauge Theory
Infrared
String Theory
Three Dimensional
Three Dimensions
Variational Method
Ground State
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Probing boundarycorrections to NambuGoto open string energy levels in 3d SU(2) gauge theory
Probing boundarycorrections to NambuGoto open string energy levels in 3d SU(2) gauge theory,10.1007/JHEP02(2011)040,Journal of High Energy Physics,B
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Probing boundarycorrections to NambuGoto open string energy levels in 3d SU(2) gauge theory
(
Citations: 2
)
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Bastian B. Brandt
We measure the
energy levels
of the excitations of the flux tube between static quark and antiquark in threedimensional SU(2) gauge theory. Combining exponential
error reduction
techniques and a
variational method
we are able to reduce the errors for the
excited states
significantly and to extract
excited states
in distinct parity and charge conjugation channels. It is conjectured that the
infrared
behavior (at large separation R) of the flux tube is governed by an effective string theory. Indeed previous simulations show good agreement between lattice data and predictions from NambuGoto string theory. Recently, new results on the effective
string theory
obtained corrections to the NambuGoto predictions and showed that for the open string in
three dimensions
first corrections should appears at order 1/R 4. They correspond to boundary terms in the worldsheet field theory. These corrections are presumably small for the ground state, but significantly larger for the
excited states
and lift the degeneracies of the free theory. Assuming this
functional form
of the correction, we obtain for the coefficient b2 = −0.5(2)(2).
Journal:
Journal of High Energy Physics  J HIGH ENERGY PHYS
, vol. 2011, no. 2, pp. 121, 2011
DOI:
10.1007/JHEP02(2011)040
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Citation Context
(1)
...In particular, for the open string channel in D = 2 + 1 dimensions, the leadingorder corrections (which are induced by boundary terms appearing in the effective action) are predicted to be proportional to r −4 , and have been recently investigated in highprecision simulations [
26
]...
Michele Caselle
,
et al.
Universal signatures of the effective string in finite temperature lat...
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Citations
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Universal signatures of the effective string in finite temperature lattice gauge theories
(
Citations: 1
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