Zobrazeno 1 - 10
of 316
pro vyhledávání: '"Herbut, Igor"'
We investigate the relativistic SO(2)- and SO(3)-invariant Gross-Neveu-Yukawa field theories for real, rank-two, symmetric, traceless tensor order parameters coupled to $N_{\text{f}}$ flavors of two-component Dirac fermions. These field theories aris
Externí odkaz:
http://arxiv.org/abs/2411.16842
Autor:
Kheirkhah, Majid, Herbut, Igor F.
Three-dimensional $d$-wave ($j=2$) superconducting state may result from Cooper pairing in channels with different angular momenta and spin, such as $(l=0, s=2)$ or $(l=2, s=0)$. We consider spin-3/2 Luttinger fermions in the limit of small spin-orbi
Externí odkaz:
http://arxiv.org/abs/2410.03526
Autor:
Han, SangEun, Herbut, Igor F.
Publikováno v:
Phys. Rev. B 110, 125131 (2024)
We construct and study the relativistic Gross-Neveu-Yukawa field theory for the $\text{SO}(2N)$ real symmetric second-rank tensor order parameter coupled to $N_f$ flavors of $4N$-component Majorana fermions in 2+1 dimensions. Such a tensor order para
Externí odkaz:
http://arxiv.org/abs/2406.01681
Autor:
Han, SangEun, Herbut, Igor F.
Publikováno v:
Phys. Rev. D 109, 096026 (2024)
The canonical Gross-Neveu model for $N$ two-component Dirac fermions in $2+1$ dimensions suffers a continuous phase transition at a critical interaction $g_{c1} \sim 1/N$ at large $N$, at which its continuous symmetry $\text{SO}(2N)$ is preserved and
Externí odkaz:
http://arxiv.org/abs/2403.09627
Autor:
Kheirkhah, Majid, Herbut, Igor F.
Publikováno v:
Phys. Rev. B 108, 224514 (2023)
We consider the spin-3/2 Luttinger fermions with contact attraction near the SU(4)-symmetric limit of vanishing Luttinger spin-orbit-coupling parameter responsible for band inversion, and at finite chemical potential. In the case of exact SU(4) symme
Externí odkaz:
http://arxiv.org/abs/2310.18157
Publikováno v:
Physical Review B, vol. 108, 245130 (2023)
Evidence for relativistic quantum criticality of antiferromagnetism and superconductivity in two-dimensional Dirac fermion systems has been found in large-scale quantum Monte Carlo simulations. However, the corresponding ($2+1$)-dimensional Gross--Ne
Externí odkaz:
http://arxiv.org/abs/2308.12426
Autor:
Herbut, Igor F., Mandal, Subrata
Publikováno v:
Physical Review B vol. 108, L161108 (2023)
Electrons on honeycomb or pi-flux lattices obey effective massless Dirac equation at low energies and at the neutrality point, and should suffer quantum phase transitions into various Mott insulators and superconductors at strong two-body interaction
Externí odkaz:
http://arxiv.org/abs/2305.17264
Autor:
Herbut, Igor F.
Wilson-Fisher expansion near upper critical dimension has proven to be an invaluable conceptual and computational tool in our understanding of the universal critical behavior in the $\phi ^4$ field theories that describe low-energy physics of the can
Externí odkaz:
http://arxiv.org/abs/2304.07654