The anomalous chiral Lagrangian of order $p^6$
نویسندگان
چکیده
منابع مشابه
The anomalous chiral Lagrangian of order p 6
We construct the effective chiral Lagrangian for chiral perturbation theory in the mesonic odd-intrinsic-parity sector at order p6. The Lagrangian contains 24 in principle measurable terms and no contact terms for the general case of Nf light flavours, 23 terms for three and 5 for two flavours. In the two flavour case we need a total of 13 terms if an external singlet vector field is included. ...
متن کاملExtension of the chiral perturbation theory meson Lagrangian to order p6.
We have derived the most general chirally invariant Lagrangian L 6 for the meson sector at order p 6. The result provides an extension of the standard Gasser-Leutwyler Lagrangian L 4 to one higher order, including as well all the odd intrinsic parity terms in the Lagrangian. The most difficult part of the derivation was developing a systematic strategy so as to get all of the independent terms ...
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We construct the effective chiral Lagrangian for chiral perturbation theory in the mesonic even-intrinsic-parity sector at order p. The Lagrangian contains 112 in principle measurable + 3 contact terms for the general case of n light flavours, 91+3 for three and 53+4 for two flavours. The equivalence between equations of motion and field redefinitions to remove spurious terms in the Lagrangians...
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We construct the minimal effective chiral pion–nucleon SU(2) Lagrangian at fourth order in the chiral expansion. The Lagrangian contains 118 in principle measurable terms. We develop both the relativistic as well as the heavy baryon formulation of the effective field theory. For the latter, we also work out explicitly all 1/m corrections at fourth order. We display all relevant relations needed...
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Symmetries affected by the anomaly do not survive quantization and cannot be understood classically. They are of fundamental importance and offer an opportunity of expanding the theoretical framework. We examine the theory of the anomalous sector, starting from lowest order Chiral Perturbation Theory (ChPT), leading up to the construction of the recently developed Lagrangian of O ( p ) describi...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2002
ISSN: 1434-6044,1434-6052
DOI: 10.1007/s100520100887