144 citations · 971 across the 31 of their papers we have counts for
31 papers
Magic Angle Butterfly in Twisted Trilayer Graphene
Fedor K. Popov, Grigory Tarnopolsky
We consider a configuration of three stacked graphene monolayers with commensurate twist angles , where and are coprime integers with and c…
Magic Angles In Equal-Twist Trilayer Graphene
Fedor K. Popov, Grigory Tarnopolsky
We consider a configuration of three stacked graphene monolayers with equal consecutive twist angles . Remarkably, in the chiral limit when interlayer coupling terms between $\t…
Deterministic Chaos vs Integrable Models
Stefano Negro, Fedor K. Popov, Jacob Sonnenschein
In this work we present analytical and numerical evidences that classical integrable models possessing infinitely many degrees of freedom unexpectedly exhibit some features that ar…
Measurement-induced phase transition in teleportation and wormholes
Alexey Milekhin, Fedor K. Popov
We demonstrate that some quantum teleportation protocols exhibit measurement induced phase transitions in Sachdev-Ye-Kitaev model. Namely, Kitaev-Yoshida and Gao-Jafferis-Wall prot…
Non-Perturbative Defects in Tensor Models from Melonic Trees
Fedor K. Popov, Yifan Wang
The Klebanov-Tarnopolsky tensor model is a quantum field theory for rank-three tensor scalar fields with certain quartic potential. The theory possesses an unusual large limit…
Beyond the Berry Phase: Extrinsic Geometry of Quantum States
Alexander Avdoshkin, Fedor K. Popov
Consider a set of quantum states parameterized by taken from some parameter space . We demonstrate how all geometric properties of this manifold of states a…
Kronecker anomalies and gravitational striction
Alexander M. Polyakov, Fedor K. Popov
We study quantum field theories in which the number of degrees of freedom changes discontinuously across the momentum space. This discontinuity which we call "Kronecker anomaly" le…
Supersymmetry in QCD coupled to fermions
Fedor K. Popov
We consider dimensional Yang-Mills theory with gauge group coupled to a massive Majorana fermion field in an adjoint representation and a number of massless Dirac or Majo…
Chaotic RG Flow in Tensor Models
Maikel M. Bosschaert, Christian B. Jepsen, Fedor K. Popov
We study a bi-antisymmetric tensor quantum field theory with symmetry. Working in dimensions we calculate the beta functions up to second order in the c…
Group theoretic approach to many-body scar states in fermionic lattice models
Kiryl Pakrouski, Preethi N. Pallegar, Fedor K. Popov +1
It has been shown [arXiv:2007.00845] that three families of highly symmetric states are many-body scars for any spin-1/2 fermionic Hamiltonian of the form , where is a…
Homoclinic RG flows, or when relevant operators become irrelevant
Christian B. Jepsen, Fedor K. Popov
We study an supersymmetric quantum field theory with symmetry. Working in dimensions, we calculate the beta functions up to second loop orde…
RG Limit Cycles and Unconventional Fixed Points in Perturbative QFT
Christian B. Jepsen, Igor R. Klebanov, Fedor K. Popov
We study quantum field theories with sextic interactions in dimensions, where the scalar fields form irreducible representations under the or global…
Hidden Wave Function of Twisted Bilayer Graphene: Flat Band as a Landau Level
Fedor K. Popov, Alexey Milekhin
We study the chirally symmetric continuum model (CS-CM) of the twisted bilayer graphene. The equation on a flat band could be interpreted as a Dirac equation on a torus in the exte…
Many Body Scars as a Group Invariant Sector of Hilbert Space
Kiryl Pakrouski, Preethi N. Pallegar, Fedor K. Popov +1
We present a class of Hamiltonians for which a sector of the Hilbert space invariant under a Lie group , which is not a symmetry of , possesses the essential properties o…
Hagedorn Temperature in Large Majorana Quantum Mechanics
Gabriel Gaitan, Igor R. Klebanov, Kiryl Pakrouski +2
We discuss two types of quantum mechanical models that couple large numbers of Majorana fermions and have orthogonal symmetry groups. In models of vector type, only one of the symm…
Supersymmetric Tensor Model at Large and Small
Fedor K. Popov
We study the supersymmetric quantum field theory of a scalar superfield with a tetrahedral interaction. In the large limit the theory is dominated by the mel…
Majorana Fermion Quantum Mechanics for Higher Rank Tensors
Igor R. Klebanov, Preethi N. Pallegar, Fedor K. Popov
We study quantum mechanical models in which the dynamical degrees of freedom are real fermionic tensors of rank five and higher. They are the non-random counterparts of the Sachdev…
Characters of different secular effects in various patches of de Sitter space
E. T. Akhmedov, U. Moschella, F. K. Popov
There are at least three different types of secular effects in the two-point correlation functions in scalar quantum field theories in de Sitter space-time. The first one is specif…
TASI Lectures on Large Tensor Models
Igor R. Klebanov, Fedor Popov, Grigory Tarnopolsky
The first part of these lecture notes is mostly devoted to a comparative discussion of the three basic large limits, which apply to fields which are vectors, matrices, or tenso…
Spectrum of Majorana Quantum Mechanics with Symmetry
Kiryl Pakrouski, Igor R. Klebanov, Fedor Popov +1
We study the quantum mechanics of 3-index Majorana fermions governed by a quartic Hamiltonian with symmetry. Similarly to the Sachdev-Ye-Kitaev model, this tenso…
Prismatic Large Models for Bosonic Tensors
Simone Giombi, Igor R. Klebanov, Fedor Popov +2
We study the symmetric quantum field theory of a bosonic tensor with sextic interactions. Its large limit is dominated by a positive-definite operator, whose…
Traversable wormholes in four dimensions
Juan Maldacena, Alexey Milekhin, Fedor Popov
We present a wormhole solution in four dimensions. It is a solution of an Einstein Maxwell theory plus charged massless fermions. The fermions give rise to a negative Casimir-like…
Ultraviolet phenomena in AdS self-interacting quantum field theory
Emil T. Akhmedov, Ugo Moschella, Fedor K. Popov
We study the one-loop corrections to the four-point function in the Anti de Sitter space-time for a field theory. Our calculation shows the existence of non-local counterterm…
Spectra of Eigenstates in Fermionic Tensor Quantum Mechanics
Igor R. Klebanov, Alexey Milekhin, Fedor Popov +1
We study the symmetric quantum mechanics of 3-index Majorana fermions. When the ranks are all equal, this model has a large limit which…