The effective exponent γ(Q) and the slope of the β function
The slope of the β function at a fixed point is commonly thought to be RG invariant and to be the critical exponent γ⁎ that governs the approach of any physical quantity R to its fixed-point limit: R⁎−R∝Qγ⁎. Chýla has shown that this is not quite true. Here we define a proper RG invariant, the “effe...
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| Format: | Article |
| Language: | English |
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Elsevier
2016-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316304889 |