Publications by Fabian Essler


Numerical method for detecting incommensurate correlations in the Heisenberg zigzag ladder

PHYSICAL REVIEW B 62 (2000) 3259-3263

AA Aligia, CD Batista, FHL Essler


Three-particle scattering continuum in quasi-one-dimensional integer-spin Heisenberg magnets

PHYSICAL REVIEW B 62 (2000) 3264-3270

FHL Essler


Thermodynamics and excitations of the one-dimensional Hubbard model

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS 331 (2000) 197-281

T Deguchi, FHL Essler, F Gohmann, A Klumper, VE Korepin, K Kusakabe


Fate of spinons in spontaneously dimerized spin-(1)/(2) ladders

PHYSICAL REVIEW B 61 (2000) 8871-8877

D Allen, FHL Essler, AA Nersesyan


Exact solution of a partially asymmetric exclusion model using a deformed oscillator algebra

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 33 (2000) 2313-2332

RA Blythe, MR Evans, F Colaiori, FHL Essler


Optical conductivity of the half-filled hubbard chain

Phys Rev Lett 85 (2000) 3910-3913

E Jeckelmann, F Gebhard, FHL Essler

We combine well-controlled analytical and numerical methods to determine the optical conductivity of the one-dimensional Mott-Hubbard insulator at zero temperature. A dynamical density-matrix renormalization group method provides the entire absorption spectrum for all but very small coupling strengths. In this limit we calculate the conductivity analytically using exact field-theoretical methods. Above the Lieb-Wu gap the conductivity exhibits a characteristic square-root increase. For small to moderate interactions, a sharp maximum occurs just above the gap. For larger interactions, another weak feature becomes visible around the middle of the absorption band.


Correlation functions in an exactly solvable terrace-ledge-kink model

NUCLEAR PHYSICS B 556 (1999) 411-444

DB Abraham, FHL Essler, FT Latremoliere


Sine-gordon quantum magnets

International Journal of Modern Physics B 13 (1999) 2915-2925

FHL Eßler

We discuss applications of the Sine-Gordon model to quasi-one-dimensional quantum magnets. © World Scientific Publishing Company.


Sine-Gordon quantum magnets

INTERNATIONAL JOURNAL OF MODERN PHYSICS B 13 (1999) 2915-2925

FHL Essler


Density correlations in the half-filled Hubbard model

PHYSICAL REVIEW B 60 (1999) 8540-8542

FHL Essler, H Frahm


Sine-Gordon low-energy effective theory for copper benzoate

PHYSICAL REVIEW B 59 (1999) 14376-14383

FHL Essler


Form factors in the half-filled Hubbard model

PHYSICAL REVIEW B 59 (1999) 1734-1738

FHL Essler, VE Korepin


Temperature corrections to conformal field theory

EUROPEAN PHYSICAL JOURNAL B 5 (1998) 559-563

FHL Essler, VE Korepin, FT Latremoliere


Incommensurate spin correlations in spin-1/2 frustrated two-leg Heisenberg ladders

PHYSICAL REVIEW LETTERS 81 (1998) 910-913

AA Nersesyan, AO Gogolin, FHL Essler


Dynamical magnetic susceptibilities in copper benzoate

PHYSICAL REVIEW B 57 (1998) 10592-10597

FHL Essler, AM Tsvelik


Quasi-one-dimensional spin-1/2 Heisenberg magnets in their ordered phase: Correlation functions

PHYSICAL REVIEW B 56 (1997) 11001-11013

FHL Essler, AM Tsvelik, G Delfino


X-ray edge singularity in integrable lattice models of correlated electrons

PHYSICAL REVIEW B 56 (1997) 6631-6641

FHL Essler, H Frahm


Exact solution of a t-J chain with impurity

NUCLEAR PHYSICS B 489 (1997) 697-736

G Bedurftig, FHL Essler, H Frahm


Determinant representation for a quantum correlation function of the lattice sine-Gordon model

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 30 (1997) 219-244

FHL Essler, H Frahm, AR Its, VE Korepin


Integrable impurity in the supersymmetric t-J model

PHYSICAL REVIEW LETTERS 77 (1996) 5098-5101

G Bedurftig, FHL Essler, H Frahm

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