93 citations · 251 across the 14 of their papers we have counts for
15 papers
Proof of entropic order in Generalized Ising Models
Enrico Andriolo, Mendel Nguyen, Emily Richards +1
Ordering at arbitrarily high temperature - entropic order - has been argued to take place in a class of generalized Ising models parameterised by a real interaction parameter w…
Generalized Yang-Mills theory: Interpolating between SDYM and YM
Tolga Domurcukgül, Hao Geng, Mendel Nguyen +1
We construct a generalized Yang-Mills (YM) theory with two real couplings, interpolating continuously between the Self-Dual Yang-Mills (SDYM) limit (also called Chalmers-Siegel the…
Self-dual monopole loops, instantons and confinement
Mendel Nguyen, Mithat Ünsal
It is well-known that the standard instanton analysis in 4d Yang-Mills is plagued with the instanton size moduli problem, which renders the instanton contribution to vacuum energy…
Fractionalization of flux tubes in 3d and screening by emergent electric charges in 2d
Mendel Nguyen, Mithat Ünsal
We consider a class of 3d theories with a magnetic symmetry in which confinement is generated by charge clusters of monopoles. Such theories naturally arise in qu…
Chiral symmetry and Atiyah-Patodi-Singer index theorem for staggered fermions
Mendel Nguyen, Hersh Singh
We consider the Atiyah-Patodi-Singer (APS) index theorem corresponding to the chiral symmetry of a continuum formulation of staggered fermions called Kähler-Dirac fermions, which h…
Phases of theories with 1-form symmetry and the roles of center vortices and magnetic monopoles
Mendel Nguyen, Tin Sulejmanpasic, Mithat Ünsal
We analyze the phases of theories which only have a microscopic 1-form symmetry, starting with a topological BF theory and deforming it in accordance with microscopi…
Refined instanton analysis of the 2D model: mass gap, theta dependence, and mirror symmetry
Mendel Nguyen, Mithat Ünsal
We address nonperturbative dynamics of the two-dimensional bosonic and supersymmetric models for general by developing new tools directly on .…
Study of gapped phases of 4d gauge theories using temporal gauging of the 1-form symmetry
Mendel Nguyen, Yuya Tanizaki, Mithat Ünsal
To study gapped phases of d gauge theories, we introduce the temporal gauging of -form symmetry in d quantum field theories (QFTs), thereby defining effecti…
Lattice regularizations of vacua: Anomalies and qubit models
Mendel Nguyen, Hersh Singh
Anomalies are a powerful way to gain insight into possible lattice regularizations of a quantum field theory. In this work, we argue that the continuum anomaly for a given symmetry…
Winding theta and destructive interference of instantons
Mendel Nguyen, Yuya Tanizaki, Mithat Ünsal
While the dependence of field theories is periodic, the ground-state wavefunctions at and often belong to different classes of symmetry-protected topological st…
Non-invertible 1-form symmetry and Casimir scaling in 2d Yang-Mills theory
Mendel Nguyen, Yuya Tanizaki, Mithat Ünsal
Pure Yang-Mills theory in 2 spacetime dimensions shows exact Casimir scaling. Thus there are infinitely many string tensions, and this has been understood as a result of non-propag…
Semi-Abelian gauge theories, non-invertible symmetries, and string tensions beyond -ality
Mendel Nguyen, Yuya Tanizaki, Mithat Ünsal
We study a 3d lattice gauge theory with gauge group , which is obtained by gauging the global symmetry of a pure $\mathrm{U}…
Collective excitations in spin-polarized bilayer graphene
Nguyen Van Men, Nguyen Quoc Khanh, Dong Thi Kim Phuong
We calculate the plasmon frequency and damping rate of plasma oscillations in a spin-polarized BLG system. Using the long wavelength approximation for dynamical dielectric function…
Plasmon modes in double-layer biased bilayer graphene
Nguyen Van Men, Nguyen Quoc Khanh, Dang Khanh Linh
We investigate zero-temperature plasmon modes in a double-layer bilayer graphene structure under a perpendicular electrostatic bias. The numerical results demonstrate that there ex…
Plasmon modes in graphene-GaAs heterostructures
Nguyen Van Men, Nguyen Quoc Khanh
We investigate the plasmon dispersion relation and damping rate of collective excitations in a double-layer system consisting of bilayer graphene and GaAs quantum well, separated b…