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arXiv · hep-ph/9404255

Vacuum Structure in QCD with Quark and Gluon Condensates

A. Mishra·H. Mishra·Varun Sheel·S. P. Misra·P. K. Panda
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Abstract

We consider here the vacuum structure in QCD with both quark and gluon condensates and a variational ansatz for the ground state. The method is nonperturbative using only equal time algebra for the field operators. We then find that a constrained energy minimisation of the Hamiltonian leads to a QCD vacuum with both quark and gluon condensates for $α_s > α_c=0.62$. Pion decay constant and the charge radius of the pion seem to fix the QCD coupling constant $α_s$ as 1.28. The approach opens up possibilities of relating the mysterious vacuum structure with common place hadronic properties.

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A. Mishra, H. Mishra, Varun Sheel, S. P. Misra, P. K. Panda. 1994-04-11. Vacuum Structure in QCD with Quark and Gluon Condensates. https://doi.org/10.1142/s0218301396000037

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