Tilted-boundary QMC simulations establish the helical valence bond phase of the staircase J-Q3 model as a genuine 2D incommensurate phase with continuous domain-wall evolution and a columnar-to-helical transition at g_c = 0.046(2).
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Introduces an efficient SSE QMC algorithm with global updates and parallel tempering for mixed-dimensional models and applies it to map angle-dependent correlated insulators and Wigner-Mott states in M-point twisted AA-stacked SnSe2.
A new QMC estimator shows diverging superfluid density in the long-range 1d XY model as the interaction exponent alpha approaches zero.
Sign-free DQMC on three-valley Hubbard models at three electrons per cell maps an extended intermediate-coupling regime with competing local-moment formation and itinerancy, plus U(6) crossovers to ordered states, for near-isotropic interactions relevant to materials like twisted SnSe2.
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Winding-Sector Transitions and Thermodynamic Incommensurability in Helical Valence Bond Phase under Tilted Boundary Conditions
Tilted-boundary QMC simulations establish the helical valence bond phase of the staircase J-Q3 model as a genuine 2D incommensurate phase with continuous domain-wall evolution and a columnar-to-helical transition at g_c = 0.046(2).
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Mixed-dimensional quantum Monte Carlo studies of M-point moir\'e materials
Introduces an efficient SSE QMC algorithm with global updates and parallel tempering for mixed-dimensional models and applies it to map angle-dependent correlated insulators and Wigner-Mott states in M-point twisted AA-stacked SnSe2.
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Superfluidity in the spin-1/2 XY model with power-law interactions
A new QMC estimator shows diverging superfluid density in the long-range 1d XY model as the interaction exponent alpha approaches zero.
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Hidden antiferromagnetism, persistent valley fluctuations, and $U(6)$ crossovers in triangular-lattice M-point moir\'e materials via determinantal quantum Monte Carlo
Sign-free DQMC on three-valley Hubbard models at three electrons per cell maps an extended intermediate-coupling regime with competing local-moment formation and itinerancy, plus U(6) crossovers to ordered states, for near-isotropic interactions relevant to materials like twisted SnSe2.