Standard

Strings and pions. / Andrianov, A. A.; Espriu, D.

In: Theoretical and Mathematical Physics, Vol. 135, No. 3, 01.06.2003, p. 745-756.

Research output: Contribution to journal › Article › peer-review

Harvard

Andrianov, AA & Espriu, D 2003, 'Strings and pions', Theoretical and Mathematical Physics, vol. 135, no. 3, pp. 745-756. https://doi.org/10.1023/A:1024045917981

APA

Andrianov, A. A., & Espriu, D. (2003). Strings and pions. Theoretical and Mathematical Physics, 135(3), 745-756. https://doi.org/10.1023/A:1024045917981

Vancouver

Andrianov AA, Espriu D. Strings and pions. Theoretical and Mathematical Physics. 2003 Jun 1;135(3):745-756. https://doi.org/10.1023/A:1024045917981

Author

Andrianov, A. A. ; Espriu, D. / Strings and pions. In: Theoretical and Mathematical Physics. 2003 ; Vol. 135, No. 3. pp. 745-756.

BibTeX

@article{9db86eca61994fb7afd78a2bc53ace96,
title = "Strings and pions",
abstract = "We assume that QCD can be effectively described with stringlike variables and that this string is approximately represented by a Nambu-Goto or Polyakov string in some energy region. But to overcome the long-standing problems with the behavior of hadronic string amplitudes at low energies, the string is built over the correct (chirally noninvariant) QCD vacuum using a boundary interaction with background chiral fields associated with pions. Making this interaction compatible with the conformal symmetry of the string and with the unitarity constraint on chiral Gelds, we reconstruct the equations of motion for the latter and, furthermore, recover the Lagrangian of a nonlinear sigma model of pion interactions. We obtain the chiral structural constants of Gasser and Leutwyler in the next-to-leading order in the derivative expansion. The estimated coefficients fit the phenomenological values well.",
keywords = "Chiral symmetries, Conformal symmetries, Hadron strings, Pion interactions, Quantum chromodynamics",
author = "Andrianov, {A. A.} and D. Espriu",
year = "2003",
month = jun,
day = "1",
doi = "10.1023/A:1024045917981",
language = "English",
volume = "135",
pages = "745--756",
journal = "Theoretical and Mathematical Physics (Russian Federation)",
issn = "0040-5779",
publisher = "Springer Nature",
number = "3",

}

RIS

TY - JOUR

T1 - Strings and pions

AU - Andrianov, A. A.

AU - Espriu, D.

PY - 2003/6/1

Y1 - 2003/6/1

N2 - We assume that QCD can be effectively described with stringlike variables and that this string is approximately represented by a Nambu-Goto or Polyakov string in some energy region. But to overcome the long-standing problems with the behavior of hadronic string amplitudes at low energies, the string is built over the correct (chirally noninvariant) QCD vacuum using a boundary interaction with background chiral fields associated with pions. Making this interaction compatible with the conformal symmetry of the string and with the unitarity constraint on chiral Gelds, we reconstruct the equations of motion for the latter and, furthermore, recover the Lagrangian of a nonlinear sigma model of pion interactions. We obtain the chiral structural constants of Gasser and Leutwyler in the next-to-leading order in the derivative expansion. The estimated coefficients fit the phenomenological values well.

AB - We assume that QCD can be effectively described with stringlike variables and that this string is approximately represented by a Nambu-Goto or Polyakov string in some energy region. But to overcome the long-standing problems with the behavior of hadronic string amplitudes at low energies, the string is built over the correct (chirally noninvariant) QCD vacuum using a boundary interaction with background chiral fields associated with pions. Making this interaction compatible with the conformal symmetry of the string and with the unitarity constraint on chiral Gelds, we reconstruct the equations of motion for the latter and, furthermore, recover the Lagrangian of a nonlinear sigma model of pion interactions. We obtain the chiral structural constants of Gasser and Leutwyler in the next-to-leading order in the derivative expansion. The estimated coefficients fit the phenomenological values well.

KW - Chiral symmetries

KW - Conformal symmetries

KW - Hadron strings

KW - Pion interactions

KW - Quantum chromodynamics

UR - http://www.scopus.com/inward/record.url?scp=0038541946&partnerID=8YFLogxK

U2 - 10.1023/A:1024045917981

DO - 10.1023/A:1024045917981

M3 - Article

AN - SCOPUS:0038541946

VL - 135

SP - 745

EP - 756

JO - Theoretical and Mathematical Physics (Russian Federation)

JF - Theoretical and Mathematical Physics (Russian Federation)

SN - 0040-5779

IS - 3

ER -

ID: 36894485