Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Simultaneous fermion and exciton condensations from a model Hamiltonian

Journal Article · · Physical Review. B
 [1];  [2]
  1. Univ. of Chicago, IL (United States); Department of Chemistry and The James Franck Institute, The University of Chicago, Chicago, IL (United States)
  2. Univ. of Chicago, IL (United States)

Fermion-exciton condensation in which both fermion-pair (i.e., superconductivity) and exciton condensations occur simultaneously in a single coherent quantum state has recently been conjectured to exist. Here, we capture the fermion-exciton condensation through a model Hamiltonian that can recreate the physics of this new class of highly correlated condensation phenomena. We demonstrate that the Hamiltonian generates the large-eigenvalue signatures of fermion-pair and exciton condensations for a series of states with increasing particle numbers. The results confirm that the dual-condensate wave function arises from the entanglement of fermion-pair and exciton wave functions, which we previously predicted in the thermodynamic limit. Furthermore, this model Hamiltonian—generalizing well-known model Hamiltonians for either superconductivity or exciton condensation—can explore a wide variety of condensation behavior. It provides significant insights into the required forces for generating a fermion-exciton condensate, which will likely be invaluable for realizing such condensations in realistic materials with applications from superconductors to excitonic materials.

Research Organization:
Univ. of Chicago, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); U.S. National Science Foundation; NSF GRFP
Grant/Contract Number:
SC0019215
OSTI ID:
1871629
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 3 Vol. 105; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (68)

Plancks Gesetz und Lichtquantenhypothese journal December 1924
Quasi spin pairing and the structure of the Lipkin Model journal June 1978
Non-coplanar Model States in Quantum Magnetism Applications of the High-Order Coupled Cluster Method journal May 2019
Exact eigenstates of the pairing-force Hamiltonian journal March 1964
Validity of many-body approximation methods for a solvable model journal February 1965
A restricted class of exact eigenstates of the pairing-force Hamiltonian journal February 1963
Integrability of the pairing hamiltonian journal October 1997
Application to the exact theory of the pairing model to some even isotopes of lead journal June 1963
Complexity and disequilibrium as telltales of superconductivity journal September 2018
Multiple metastable states in an off-lattice Potts model journal November 2021
Comparison of the density-matrix renormalization group method applied to fractional quantum Hall systems in different geometries journal June 2012
Variational Optimization of the Second-Order Density Matrix Corresponding to a Seniority-Zero Configuration Interaction Wave Function journal August 2015
Electronic Structure Calculations and the Ising Hamiltonian journal October 2017
Exciton Condensation in Molecular-Scale van der Waals Stacks journal October 2021
Bose–Einstein condensation of exciton polaritons journal September 2006
Unconventional superconductivity in magic-angle graphene superlattices journal March 2018
High-temperature superfluidity with indirect excitons in van der Waals heterostructures journal July 2014
Quantum Hall drag of exciton condensate in graphene journal May 2017
Observation of a quantum phase transition in the quantum Rabi model with a single trapped ion journal February 2021
Evidence of high-temperature exciton condensation in two-dimensional atomic double layers journal October 2019
A semi exact solution for a metallic phase in a Holstein-Hubbard chain at half filling with Gaussian anharmonic phonons journal June 2021
Particle‐Hole Matrix: Its Connection with the Symmetries and Collective Features of the Ground State journal October 1969
Exact Eigenstates of the Pairing‐Force Hamiltonian. II journal July 1965
Structure of Fermion Density Matrices. II. Antisymmetrized Geminal Powers journal September 1965
Natural Spin Orbital Analysis of Hydrogen Molecule Wave Functions journal June 1959
Convex-set description of quantum phase transitions in the transverse Ising model using reduced-density-matrix theory journal June 2009
Pair 2-electron reduced density matrix theory using localized orbitals journal August 2017
Electron-hole Superconductivity (Review) journal September 2018
First-principles model hamiltonians for ferroelectric phase transitions journal January 1994
On the exact solutions of the Lipkin-Meshkov-Glick model journal April 2001
On the thermodynamic limit of the Lipkin model journal July 2006
Quantum simulation of spin models on an arbitrary lattice with trapped ions journal September 2012
Symmetry breaking and the geometry of reduced density matrices journal November 2016
The exact ground state for a class of matrix Hamiltonian models: quantum phase transition and universality in the thermodynamic limit journal November 2006
Twenty-five Years of High-Temperature Superconductivity – A Personal Review journal July 2013
Quantum magnetism in spin-3/2 chains journal July 2015
Correlating AGP on a quantum computer journal November 2020
Theory of Superconductivity journal December 1957
Eigenvalues of Fermion Density Matrices journal June 1965
On the Bose-Einstein Condensation journal December 1938
The Theory of Liquid Helium journal November 1947
Contracted Schrödinger equation: Determining quantum energies and two-particle density matrices without wave functions journal June 1998
Exactness of wave functions from two-body exponential transformations in many-body quantum theory journal January 2004
Computation of quantum phase transitions by reduced-density-matrix mechanics journal July 2006
Large eigenvalue of the cumulant part of the two-electron reduced density matrix as a measure of off-diagonal long-range order journal November 2015
Potential coexistence of exciton and fermion-pair condensations journal February 2020
Quantum magnetism of iron-based ladders: Blocks, spirals, and spin flux journal July 2021
Classical and quantum phase transitions in the Lipkin-Meshkov-Glick model journal September 2006
Room-temperature superfluidity in graphene bilayers journal September 2008
Polynomial similarity transformation theory: A smooth interpolation between coupled cluster doubles and projected BCS applied to the reduced BCS Hamiltonian journal March 2016
Quantum signature of exciton condensation journal July 2018
t expansion and the Lipkin model journal May 1988
Simulation of X X Z Spin Models Using Sideband Transitions in Trapped Bosonic Gases journal December 2020
Condensation of Indirect Excitons in Coupled AlAs/GaAs Quantum Wells journal July 1994
Parity-Affected Superconductivity in Ultrasmall Metallic Grains journal October 1996
Signatures of a degenerate many-body state of interlayer excitons in a van der Waals heterostack journal December 2020
Preparation of an exciton condensate of photons on a 53-qubit quantum computer journal November 2020
Chasing the Exciton Condensate journal July 2016
Concept of Off-Diagonal Long-Range Order and the Quantum Phases of Liquid He and of Superconductors journal October 1962
Structure of Fermion Density Matrices journal July 1963
Two Kinds of Bosons and Bose Condensates journal January 1970
Signatures of exciton condensation in a transition metal dichalcogenide journal December 2017
Bose–Einstein condensation in one-dimensional optical lattices: Bogoliubov’s approximation and beyond journal July 2016
Analytical and numerical analysis of the complete Lipkin–Meshkov–Glick Hamiltonian journal May 2018
Coherent states of excitons journal November 2017
From Real Materials to Model Hamiltonians With Density Matrix Downfolding journal May 2018
Interaction between Different Kinds of Quantum Phase Transitions journal April 2021
Exactly solvable models of nuclei journal January 2014

Similar Records

Quantum phase transitions in a model Hamiltonian exhibiting entangled simultaneous fermion-pair and exciton condensations
Journal Article · Thu Oct 06 00:00:00 EDT 2022 · Physical Review. B · OSTI ID:2421039

Entangled phase of simultaneous fermion and exciton condensations realized
Journal Article · Mon Mar 07 23:00:00 EST 2022 · Physical Review. B · OSTI ID:1979781

Superconductor to exciton condensate transition in a model copper-oxide material
Journal Article · Thu Dec 26 23:00:00 EST 2024 · New Journal of Physics · OSTI ID:2483909