# Minimal subtraction scheme

(Redirected from MSbar scheme)

In quantum field theory, the minimal subtraction scheme, or MS scheme, is a particular renormalization scheme used to absorb the infinities that arise in perturbative calculations beyond leading order, introduced independently by 't Hooft (1973) and Weinberg (1973). The MS scheme consists of absorbing only the divergent part of the radiative corrections into the counterterms.

In the similar and more widely used modified minimal subtraction, or MS-bar scheme ($\overline{MS}$), one absorbs the divergent part plus a universal constant (which always arises along with the divergence in Feynman diagram calculations) into the counterterms.

## References

• 't Hooft, G. (1973). "Dimensional regularization and the renormalization group". 61: 455. Bibcode:1973NuPhB..61..455T. doi:10.1016/0550-3213(73)90376-3.
• Collins, J.C. (1984). Renormalization. Cambridge Monographs on Mathematical Physics. Cambridge University Press. ISBN 978-0-521-24261-5. MR778558.
• Weinberg, S. (1973). "New Approach to the Renormalization Group". 8 (10): 3497–3509. Bibcode:1973PhRvD...8.3497W. doi:10.1103/PhysRevD.8.3497.

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