Functional renormalization group flow of massive gravity [PDF]
European Physical Journal C: Particles and Fields, 2020 We apply the functional renormalization group equation to a massive Fierz–Pauli action in curved space and find that, even though a massive term is a modification in the infrared sector, the mass term modifies the value of the non-gaussian fixed point in
Maximiliano Binder, Iván Schmidt
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Functional renormalization group approach to neutron matter [PDF]
Physics Letters B, 2014 The chiral nucleon-meson model, previously applied to systems with equal number of neutrons and protons, is extended to asymmetric nuclear matter. Fluctuations are included in the framework of the functional renormalization group.
Matthias Drews, Wolfram Weise
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Functional renormalization group study of the Anderson–Holstein model
New Journal of Physics, 2014 We present a comprehensive study of the spectral and transport properties in the Anderson–Holstein model both in and out of equilibrium using the functional renormalization group (fRG).
M A Laakso +3 more
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Pseudogap opening in the two-dimensional Hubbard model: A functional renormalization group analysis [PDF]
Physical Review Research, 2020 Using the recently introduced multiloop extension of the functional renormalization group, we compute the frequency- and momentum-dependent self-energy of the two-dimensional Hubbard model at half filling and weak coupling. We show that, in the truncated-
Cornelia Hille +3 more
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Functional renormalization group approach to the singlet-triplet transition in quantum dots [PDF]
, 2012 We present a functional renormalization group approach to the zero bias transport properties of a quantum dot with two different orbitals and in presence of Hund's coupling.
Hasselmann, N. +2 more
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High-performance functional renormalization group calculations for interacting fermions [PDF]
, 2016 We derive a novel computational scheme for functional Renormalization Group (fRG) calculations for interacting fermions on 2D lattices. The scheme is based on the exchange parametrization fRG for the two-fermion interaction, with additional insertions of
de la Peña, D. Sánchez +5 more
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Truncated-Unity Functional Renormalization Group for Multiband Systems With Spin-Orbit Coupling
Frontiers in Physics, 2018 Although the functional renormalization group (fRG) is by now a well-established method for investigating correlated electron systems, it is still undergoing significant technical and conceptual improvements.
Giulio A. H. Schober +5 more
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Phase transitions in TGFT: functional renormalization group in the cyclic-melonic potential approximation and equivalence to O(N) models [PDF]
Journal of High Energy Physics, 2020 In the group field theory approach to quantum gravity, continuous spacetime geometry is expected to emerge via phase transition. However, understanding the phase diagram and finding fixed points under the renormalization group flow remains a major ...
Andreas G. A. Pithis, Johannes Thürigen
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Dynamical functional renormalization group computation of order parameters and critical temperatures in the two-dimensional Hubbard model [PDF]
Physical review B, 2020 We analyze the interplay of antiferromagnetism and pairing in the two dimensional Hubbard model with a moderate repulsive interaction. Coupled charge, magnetic and pairing fluctuations above the energy scale of spontaneous symmetry breaking are treated ...
Demetrio Vilardi +2 more
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Gauge dependence of alternative flow equation for the functional renormalization group
Nuclear Physics B, 2020 The gauge dependence problem of alternative flow equation for the functional renormalization group is studied. It is shown that the effective two-particle irreducible effective action depends on gauges at any value of IR parameter k.
Peter M. Lavrov
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