Emilie Huffman

Emilie Huffman profile picture
PSI Fellow
Perimeter Institute for Theoretical Physics
Academic Staff
Areas of research:
Particle Physics
Quantum Matter
I study strongly correlated many-body systems (particularly fermionic ones) numerically. Areas of focus include the development of efficient quantum Monte Carlo algorithms for studying fermionic systems (fermion bag, meron cluster, and auxiliary field techniques), as well as finding new sign-problem-free ways to study these systems. I've worked on four-fermi theories as well as systems involving gauge fields that interact with matter.
  • 2012-2018, PhD Student, Duke University. 2018, Humboldt Fellow, University of Wuerzburg. 2019-2020, Postdoctoral Fellow, Perimeter Institute 2020-2021, PSI Fellow, Perimeter Institute 2021-, Postdoctoral Fellow, Perimeter Institute
  • F. F. Assaad, M. Bercx, F. Goth, A. Götz, J. S. Hofmann, E. Huffman, Z. Liu, F. Parisen Toldin, J. S. E. Portela, J. Schwab, "The ALF (Algorithms for Lattice Fermions) project release 2.0. Documentation for the auxiliary-field quantum Monte Carlo code," SciPost Phys. Codebases 1 (2022), https://arxiv.org/abs/2012.11914
  • D. Banerjee, E. Huffman, L. Rammelmüller. "Exploring Bosonic and Fermionic Link Models on (3+1)-d tubes." Accepted by Physical Review Research, https://arxiv.org/abs/2201.07171
  • Liu, Huffman, Chandrasekharan, Kaul, "Quantum Criticality of Anti-ferromagnetism and Superconductivity with Relativity," Physical Review Letters 128, 117202, https://arxiv.org/abs/2109.06059
  • Huffman, Chandrasekharan, "Fermionic Quantum Criticality in Fermion bag-inspired Hamiltonian Lattice Field Theories.'' Phys. Rev. D 101, 074501 (2020), https://arxiv.org/abs/1912.12823
  • Frank, Huffman, Chandrasekharan, "Emergence of Gauss' Law in a Z2 Lattice Gauge Theory," Physics Letters B, Volume 806, 10 July 2020, https://arxiv.org/abs/1904.05414
  • Huffman, Chandrasekharan, "Fermion bag approach to Hamiltonian lattice field theories in continuous time," Physical Review D 96, 114502 (2017), https://arxiv.org/abs/1709.03578
  • Huffman, Mizel, "Leggett-Garg test of superconducting qubit addressing the clumsiness loophole," Phys. Rev. A 95, 032131 (2017), https://arxiv.org/abs/1609.05957
  • Hann, Huffman, Chandrasekharan, "Solution to the sign problem in a frustrated quantum impurity model," Annals of Physics 376, 63-75 (2017), https://arxiv.org/abs/1608.05144
  • Huffman, Banerjee, Chandrasekharan, Wiese, "Real-Time Evolution of Strongly Coupled Fermions driven by Dissipation," Annals of Physics Vol 372, Pages 309-319, (2016), https://arxiv.org/abs/1512.00412
  • Huffman, Chandrasekharan, "Solution to sign problems in half-filled spin-polarized electronic systems," Phys. Rev. B 89, 111101 (2014), https://arxiv.org/abs/1311.0034
  • E. Huffman, M. García Vera, D. Banerjee. "Real-time dynamics of Plaquette Models using NISQ Hardware." Submitted to Physical Review D. https://arxiv.org/abs/2109.15065
  • D. Banerjee, E. Huffman, L. Rammelmüller. "Introducing Fermionic Link Models." PoS (LATTICE 2021) 193, https://arxiv.org/abs/2111.00300
  • Huffman. "Critical exponents for a spin-charge flip symmetric fixed point in 2+1d with massless Dirac fermions." PoS (LATTICE 2021) 208, https://arxiv.org/abs/2112.15511
  • Huffman, PoS(LATTICE2016)258, "Monte Carlo methods in continuous time for lattice Hamiltonians," https://arxiv.org/abs/1611.01680
  • Huffman, PoS (LATTICE 2014) 058, "Solution to new sign problems with Hamiltonian Lattice Fermions," https://arxiv.org/abs/1411.7147
  • Universality from Hamiltonian Lattice Fermions, CRM Workshop on CFT/Many-Body Physics, Montreal, Canada.
  • Fermion QMC, ALF Workshop, University of Wuerzburg, Germany. [virtual]
  • Real-time dynamics of Plaquette Models using NISQ Hardware, Unitary Fund. [virtual]
  • Interacting massless Dirac fermions with spin-charge flip symmetry, Saha Institute of Nuclear Physics, Kolkata, India. [virtual]
  • Critical exponents at the spin-charge flip symmetric fixed point, Lattice 2021, Massachusetts Institute of Technology, Cambridge, USA. [virtual]
  • IBM Q and Quantum Link Models on Quantum Circuits, University of Wuerzburg, Wuerzburg, Germany. [virtual]
  • Real-time evolution of qubit regularized Gauge Theories, YITP Workshop, Kyoto, Japan. [virtual]
  • Fermion-bag inspired Hamiltonian lattice field theory, University of Bielefeld, Bielefeld, Germany [virtual].
  • Fermionic Quantum Criticality in Fermion bag-inspired Hamiltonian Lattice Field Theories, Brookhaven National Laboratory, Upton, NY, USA. [virtual]
  • Fermionic Quantum Criticality in Fermion bag-inspired Hamiltonian Lattice Field Theories, Fermionic Quantum Criticality and Beyond Mini-Workshop 2020, Wuerzburg, Germany.
  • Emergence of Gauss' Law in a Z2 Lattice Gauge Theory, Tata Institute of Fundamental Research, Mumbai, India.
  • Fermion bag-Inspired Hamiltonian Lattice Field Theories, School on algorithms in lattice gauge theory and spin systems 2020, Kolkata, India.
  • Fermion bag techniques: Solutions to sign problems and algorithms from the Hamiltonian perspective, Hong Kong University of Science and Technology, Hong Kong.
  • Fermionic Quantum Criticality in Fermion bag-inspired Hamiltonian Lattice Field Theories, Institute of Physics, Chinese Academy of Sciences, Beijing, China.
  • Emergence of Gauss' Law in a Z2 Lattice Gauge Theory, Harvard University, Cambridge, USA.
  • The Fermion Bag Approach to Hamiltonian Theories, March Meeting 2019, Boston, USA.
  • Fermion Bag Algorithms and Sign-problem-free Models, SIGN 2018, Bielefeld, Germany.
  • Fermion Bag Approach to Hamiltonian Theories, University of Cologne, Cologne, Germany.
  • The Fermion Bag Approach in the Hamiltonian Picture, Harvard University, Cambridge, USA.
  • Fermion Bag Approach to Lattice Hamiltonian Field Theories, Lattice 2017 Granada, Spain.
  • QMC methods in models of interacting fermions and quantum spins, March Meeting 2017, New Orleans, USA.
  • Monte Carlo methods in continuous time for lattice Hamiltonians, Lattice 2016, University of Southampton, Southampton, UK.
  • Solution to sign problems in spin polarized fermion models interacting with quantum spins, ECT* Trento, Italy.
  • Solution to new sign problems with Hamiltonian Lattice Fermions, Lattice 2014, Columbia University, New York, USA.
  • Interacting massless Dirac fermions with spin-charge flip symmetry, Friday Club, Condensed Matter
  • Z2 gauge theory coupled to spinless fermions in 1D, Friday Club, Condensed Matter.
  • The Fermion Bag Approach in the Hamiltonian Picture, 2017-12-12, Condensed Matter