Finite temperature dopant-induced spin reorganization explored via tensor networks in the two-dimensional $t$-$J$ model

• URL: http://arxiv.org/abs/2510.04756v2
• Date: Tue, 07 Oct 2025 05:05:02 GMT
• Title: Finite temperature dopant-induced spin reorganization explored via tensor networks in the two-dimensional $t$-$J$ model
• Authors: Yintai Zhang, Aritra Sinha, Marek M. Rams, Jacek Dziarmaga,
• Abstract summary: Doped Mott insulators host intertwined spin-charge phenomena that evolve with temperature and can culminate in stripe order or superconductivity at low temperatures.<n>We simulate the $t$-$J$ model at finite temperature directly in the thermodynamic limit.<n>We introduce dopant-conditioned correlators that map how holes reshape local exchange.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Doped Mott insulators host intertwined spin-charge phenomena that evolve with temperature and can culminate in stripe order or superconductivity at low temperatures. The two-dimensional $t$-$J$ model captures this interplay yet finite-temperature, infinite-size calculations remain difficult. Using purification represented by a tensor network - an infinite projected entangled-pair state (iPEPS) ansatz - we simulate the $t$-$J$ model at finite temperature directly in the thermodynamic limit, reaching temperatures down to one tenth of the hopping rate and hole concentrations up to one quarter of the lattice sites. Beyond specific heat, uniform susceptibility, and compressibility, we introduce dopant-conditioned multi-point correlators that map how holes reshape local exchange. Nearest-neighbor hole pairs produce a strong cooperative response that reinforces antiferromagnetism on the adjacent parallel bonds, and single holes weaken nearby antiferromagnetic bonds; d-wave pairing correlations remain short-ranged over the same window. These results provide experiment-compatible thermodynamic-limit benchmarks and establish dopant-conditioned correlators as incisive probes of short-range spin-texture reorganization at finite temperature.

Related papers

• Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory [45.88028371034407]
  We study a $mathbbZ$ lattice gauge theory defined on a multi-graph with links that can be visualized as great circles of a spherical shell.<n>We show that this leads to state-dependent tunneling amplitudes underlying a phenomenon analogous to the Peierls instability.<n>By performining a detailed analysis based on matrix product states, we prove that charge deconfinement emerges as a consequence of charge-fractionalization.
  arXiv  Detail & Related papers  (2026-03-02T22:59:25Z)
• Prethermal gauge structure and surface growth in $\mathbb{Z}_2$ lattice gauge theories [0.0026426535710462316]
  We numerically study the mean-field of a $(2+1)$D spin system with thousands of interactions.<n>Our model provides a testbed for quantum simulators and is directly implementable in large-scale arrays of Rydberg atoms.
  arXiv  Detail & Related papers  (2025-10-14T17:59:58Z)
• From Quantum Tsallis Entropy to Strange Metals [0.0]
  We develop a unified framework connecting quantum Tsallis statistics to electronic transport.<n>We analyze magnetotransport, finding a linear-in-field magnetoresistance and a Hall angle consistent with Anderson's two-lifetime scenario.
  arXiv  Detail & Related papers  (2025-09-15T14:49:05Z)
• High temperature superradiant phase transition in novel quantum structures with complex network interface [44.99833362998488]
  We propose a novel quantum material concept, which enables super- and/or ultrastrong interaction of two-level systems with the photonic field in a complex network.<n>We characterize the statistical properties of networks by the first, $langlekrangle$, and second normalized, $zetaequivlanglek2rangle/langlekrangle$, moments for node degree distribution.
  arXiv  Detail & Related papers  (2025-07-22T07:56:45Z)
• Heat transport through an open coupled scalar field theory hosting stability-to-instability transition [1.96076686350775]
  We study heat transport through a one-dimensional open coupled scalar field theory. In this work, we engineer a unique bath coupling where a single bath is connected to two fields at each edge with the same strength. We derive analytical expressions for high-temperature classical heat current through the network for different bath couplings at the edges and compare them.
  arXiv  Detail & Related papers  (2024-02-07T16:03:36Z)
• Pairing from repulsion in a two-dimensional Fermi gas with soft-core interactions [3.4186533395054566]
  We investigate a model many-body system of Fermi gas in two dimensions, where the bare two-body interaction is repulsive and takes the form of a soft-core disk potential. We obtain the zero temperature phase diagram of this model by numerical functional renormalization group (FRG) We trace the stabilization and enhancement of $f$- and $h$-wave pairing back to the momentum dependence of the bare interaction.
  arXiv  Detail & Related papers  (2023-09-29T16:08:45Z)
• Thermopower in hBN/graphene/hBN superlattices [46.287853697580566]
  We experimentally study thermopower in high-quality monolayer graphene within heterostructures consisting of complete hBN encapsulation and 1D edge contacts. We show that the temperature dependence of the thermopower enables the assessment of the role of built-in strain variation and van Hove singularities. We show the same superlattice device can exhibit a temperature-driven thermopower reversal from positive to negative and vice versa, by controlling the carrier density.
  arXiv  Detail & Related papers  (2023-06-14T19:06:34Z)
• Finite temperature tensor network study of the Hubbard model on an infinite square lattice [0.0]
  The Hubbard model is a longstanding problem in the theory of strongly correlated electrons and a very active one in the experiments with ultracold fermionic atoms. Motivated by current and prospective quantum simulations, we apply a two-dimensional tensor network, an infinite projected entangled pair state, evolved in imaginary time. With U(1)xU(1) symmetry and the bond dimensions up to 29, we generate thermal states down to the temperature of 0.17 times the hopping rate.
  arXiv  Detail & Related papers  (2022-07-19T15:53:45Z)
• Photoinduced prethermal order parameter dynamics in the two-dimensional large-$N$ Hubbard-Heisenberg model [77.34726150561087]
  We study the microscopic dynamics of competing ordered phases in a two-dimensional correlated electron model. We simulate the light-induced transition between two competing phases.
  arXiv  Detail & Related papers  (2022-05-13T13:13:31Z)
• Engineering the Radiative Dynamics of Thermalized Excitons with Metal Interfaces [58.720142291102135]
  We analyze the emission properties of excitons in TMDCs near planar metal interfaces. We find suppression or enhancement of emission relative to the point dipole case by several orders of magnitude. nanoscale optical cavities are a viable pathway to generating long-lifetime exciton states in TMDCs.
  arXiv  Detail & Related papers  (2021-10-11T19:40:24Z)
• The classical two-dimensional Heisenberg model revisited: An $SU(2)$-symmetric tensor network study [0.6299766708197883]
  We make use of state-the-art tensor network approaches to explore the correlation structure for Gibbs states. We find a rapidly diverging correlation length, whose behaviour is apparently compatible with two main contradictory hypotheses.
  arXiv  Detail & Related papers  (2021-06-11T11:05:00Z)
• Uhlmann Fidelity and Fidelity Susceptibility for Integrable Spin Chains at Finite Temperature: Exact Results [68.8204255655161]
  We show that the proper inclusion of the odd parity subspace leads to the enhancement of maximal fidelity susceptibility in the intermediate range of temperatures. The correct low-temperature behavior is captured by an approximation involving the two lowest many-body energy eigenstates.
  arXiv  Detail & Related papers  (2021-05-11T14:08:02Z)
• Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations [77.34726150561087]
  The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations. Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
  arXiv  Detail & Related papers  (2020-07-20T18:00:02Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.