Abstract
We introduce a new method of replacing spin operators with pseudofermions. For a spin value S there are 2S pseudofermions each of which can have spin up or down. In contrast to the standard Abrikosov method which has 2S+1 inequivalent fermions, i.e., one for each Sz value, the present pairs are all equivalent. It follows that the general spin expression is obtained by multiplying the S=(1/2 result by a ceratin combinational factor. This aids in the construction of rotationally invariant solutions for the general-spin Kondo problem for the case when n2S, where n is the number of conduction-electron scattering channels.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2220-2222 |
| Number of pages | 3 |
| Journal | Physical Review B |
| Volume | 37 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1988 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Alternative Feynman-diagram method for the general-spin Kondo problem. / Barnes, Stewart.
In: Physical Review B, Vol. 37, No. 4, 1988, p. 2220-2222.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Alternative Feynman-diagram method for the general-spin Kondo problem
AU - Barnes, Stewart
PY - 1988
Y1 - 1988
N2 - We introduce a new method of replacing spin operators with pseudofermions. For a spin value S there are 2S pseudofermions each of which can have spin up or down. In contrast to the standard Abrikosov method which has 2S+1 inequivalent fermions, i.e., one for each Sz value, the present pairs are all equivalent. It follows that the general spin expression is obtained by multiplying the S=(1/2 result by a ceratin combinational factor. This aids in the construction of rotationally invariant solutions for the general-spin Kondo problem for the case when n2S, where n is the number of conduction-electron scattering channels.
AB - We introduce a new method of replacing spin operators with pseudofermions. For a spin value S there are 2S pseudofermions each of which can have spin up or down. In contrast to the standard Abrikosov method which has 2S+1 inequivalent fermions, i.e., one for each Sz value, the present pairs are all equivalent. It follows that the general spin expression is obtained by multiplying the S=(1/2 result by a ceratin combinational factor. This aids in the construction of rotationally invariant solutions for the general-spin Kondo problem for the case when n2S, where n is the number of conduction-electron scattering channels.
UR - http://www.scopus.com/inward/record.url?scp=35949013869&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35949013869&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.37.2220
DO - 10.1103/PhysRevB.37.2220
M3 - Article
AN - SCOPUS:35949013869
VL - 37
SP - 2220
EP - 2222
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 4
ER -