SCOAP3 Repository 4 records found  Search took 0.02 seconds. 
1. Universality hypothesis breakdown at one-loop order / Carvalho, P. R. S.
We probe the universality hypothesis by analytically computing the at least two-loop corrections to the critical exponents for q-deformed O(N) self-interacting λϕ4 scalar field theories through six distinct and independent field-theoretic renormalization group methods and ε-expansion techniques. [...]
Published in Physical Review D 97 (2018) 10.1103/PhysRevD.97.105006 arXiv:1804.07801
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2. Probing the two-scale-factor universality hypothesis by exact rotation symmetry-breaking mechanism / Neto, J. F. S. ; Lima, K. A. L. ; Carvalho, P. R. S. ; Sena-Junior, M. I.
We probe the two-scale-factor universality hypothesis by evaluating, firstly explicitly and analytically at the one-loop order, the loop quantum corrections to the amplitude ratios for O ( N ) λϕ4 scalar field theories with rotation symmetry breaking in three distinct and independent methods in which the rotation symmetry-breaking mechanism is treated exactly. [...]
Published in EPJC 77 (2017) 839 10.1140/epjc/s10052-017-5427-z
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3. Exact Lorentz-violating all-loop ultraviolet divergences in scalar field theories / Carvalho, P. R. S. ; Sena-Junior, M. I.
In this work we evaluate analytically the ultraviolet divergences of Lorentz-violating massive O( N ) λϕ4 scalar field theories, which are exact in the Lorentz-violating mechanism, firstly explicitly at next-to-leading order and latter at any loop level through an induction procedure based on a theorem following from the exact approach, for computing the corresponding critical exponents. [...]
Published in EPJC 77 (2017) 753 10.1140/epjc/s10052-017-5304-9
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4. Three-loop field renormalization for scalar field theory with Lorentz violation / Carvalho, Paulo R.S.
Applying the counterterm method in minimal subtraction scheme we calculate the three-loop quantum correction to field anomalous dimension in a Lorentz-violating O( N ) self-interacting scalar field theory. [...]
Published in Physics letters B 730 (2014) 320-325 10.1016/j.physletb.2014.01.059
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1 Carvalho, Paulo R.S.
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