TY - JOUR
T1 - Correlation functions from two-dimensional string Ward identities
AU - Klebanov, Igor R.
AU - Pasquinucci, Andrea
N1 - Funding Information:
We thank C. Nappi, A. Polyakov, A. Schwimmer, E. Verlinde, H. Verlinde, E. Witten, B. Zwiebach and S. Yankielowicz for helpful discussions. The research of I.R.K. is supported in part by DOE grant DE-ACO2-76WR03072, NSF Presidential Young Investigator Award PHY-9157482, James S. McDonnell Foundation
Funding Information:
grant 9 1-48 and an A.P. Sloan Foundation Research Fellowship. The research of A.P. is supported by an INFN fellowship.
PY - 1993/3/22
Y1 - 1993/3/22
N2 - We rederive the w∞ Ward identities, starting from the existence of trivial linearized gauge invariances, and using the method of canceled propagators in the operator formalism. Recursion relations for certain classes of correlation functions are derived, and these correlation functions are calculated exactly. We clarify the relation of these results with another derivation of the Ward identities, which relies directly on charge conservation. We also emphasize the importance of the kinematics of canceled propagators in ensuring that the Ward identities are non-trivial. Finally, we sketch an extension of Ward identities to open strings.
AB - We rederive the w∞ Ward identities, starting from the existence of trivial linearized gauge invariances, and using the method of canceled propagators in the operator formalism. Recursion relations for certain classes of correlation functions are derived, and these correlation functions are calculated exactly. We clarify the relation of these results with another derivation of the Ward identities, which relies directly on charge conservation. We also emphasize the importance of the kinematics of canceled propagators in ensuring that the Ward identities are non-trivial. Finally, we sketch an extension of Ward identities to open strings.
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U2 - 10.1016/0550-3213(93)90245-K
DO - 10.1016/0550-3213(93)90245-K
M3 - Article
AN - SCOPUS:0003346780
SN - 0550-3213
VL - 393
SP - 261
EP - 279
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 1-2
ER -