91 citations · 1.3k across the 64 of their papers we have counts for
35 papers · 1 filter
Universal logarithmic correction to Rényi (Shannon) entropy in generic systems of critical quadratic fermions
Babak Tarighi, Reyhaneh Khasseh, M. N. Najafi +1
The Rényi (Shannon) entropy, i.e. , of the ground state of quantum systems in local bases normally show a volume-law behavior. For a subsystem of quantum chains at critic…
Subsystem distances between quasiparticle excited states
Jiaju Zhang, M. A. Rajabpour
We investigate the subsystem Schatten distance, trace distance and fidelity between the quasiparticle excited states of the free and the nearest-neighbor coupled fermionic and boso…
Entanglement of magnon excitations in spin chains
Jiaju Zhang, M. A. Rajabpour
We calculate exactly the entanglement content of magnon excited states in the integrable spin-1/2 XXX and XXZ chains in the scaling limit. In particular, we show that as far as the…
Exact full counting statistics for the staggered magnetization and the domain walls in the XY spin chain
Filiberto Ares, M. A. Rajabpour, Jacopo Viti
We calculate exactly cumulant generating functions (full counting statistics) for the transverse, staggered magnetization and the domain walls at zero temperature for a finite inte…
Corrections to universal Rényi entropy in quasiparticle excited states of quantum chains
Jiaju Zhang, M. A. Rajabpour
We investigate the energy eigenstate Rényi entropy of generic bipartition in the fermionic, bosonic, and spin-1/2 XY chains. When the gap of the theory is large or all the momenta…
Scaling of the Formation Probabilities and Universal Boundary Entropies in the Quantum XY Spin Chain
Filiberto Ares, M. A. Rajabpour, Jacopo Viti
We calculate exactly the probability to find the ground state of the XY chain in a given spin configuration in the transverse -basis. By determining finite-volume corrections…
Formation probabilities and statistics of observables as defect problems in the free fermions and the quantum spin chains
M. N. Najafi, M. A. Rajabpour
We show that the computation of formation probabilities (FP) in the configuration basis and the full counting statistics (FCS) of observables in the quadratic fermionic Hamiltonian…
Return amplitude after a quantum quench in the XY chain
Khadijeh Najafi, M. A. Rajabpour, Jacopo Viti
We determine an exact formula for the transition amplitude between any two arbitrary eigenstates of the local -magnetization operators in the quantum XY chain. We further use th…
Entanglement Hamiltonian of quantum critical chains and conformal field theories
T. Mendes-Santos, G. Giudici, M. Dalmonte +1
We consider a lattice version of the Bisognano-Wichmann (BW) modular Hamiltonian as an ansatz for the bipartite entanglement Hamiltonian of the quantum critical chains. Using numer…
Classification of the sign of the critical Casimir force in two dimensional systems at asymptotically large separations
M. A. Rajabpour
We classify the sign of the critical Casimir force between two finite objects separated by a large distance in the two dimensional systems that can be described by conformal field…
Finite size corrections to scaling of the formation probabilities and the Casimir effect in the conformal field theories
M. A. Rajabpour
We calculate formation probabilities of the ground state of the finite size quantum critical chains using conformal field theory (CFT) techniques. In particular, we calculate the f…
Post measurement bipartite entanglement entropy in conformal field theories
M. A. Rajabpour
We derive exact formulas for bipartite von Neumann entanglement entropy after partial projective local measurement in dimensional conformal field theories with periodic and o…
Entanglement dynamics in short and long-range harmonic oscillators
M. Ghasemi Nezhadhaghighi, M. A. Rajabpour
We study the time evolution of the entanglement entropy in the short and long-range coupled harmonic oscillators that have well-defined continuum limit field theories. We first int…
Universal behavior of the Shannon and Rényi mutual information of quantum critical chains
F. C. Alcaraz, M. A. Rajabpour
We study the Shannon and Rényi mutual information (MI) in the ground state (GS) of different critical quantum spin chains. Despite the apparent basis dependence of these quantities…
Quantum entanglement entropy and classical mutual information in long-range harmonic oscillators
M. Ghasemi Nezhadhaghighi, M. A. Rajabpour
We study different aspects of quantum von Neumann and Rényi entanglement entropy of one dimensional long-range harmonic oscillators that can be described by well-defined non-local…
Quantum Quench of the trap frequency in the harmonic Calogero model
M. A. Rajabpour, S. Sotiriadis
We consider a quantum quench of the trap frequency in a system of bosons interacting through an inverse-square potential and confined in a harmonic trap (the harmonic Calogero mode…
Universal behavior of the Shannon mutual information of critical quantum chains
F. C. Alcaraz, M. A. Rajabpour
We consider the Shannon mutual information of subsystems of critical quantum chains in their ground states. Our results indicate a universal leading behavior for large subsystem si…
Universality and conformal non-invariance in self-affine rough surfaces
S. Hosseinabadi, M. A. Rajabpour, M. Sadegh Movahed +1
We show numerically that the roughness and growth exponents of a wide range of rough surfaces, such as random deposition with relaxation (RDR), ballistic deposition (BD) and restri…
Influence of long-range interactions on the critical behavior of the Ising model
Thibault Blanchard, Marco Picco, M. A. Rajabpour
We study the ferromagnetic Ising model with long-range interactions in two dimensions. We first present results of a Monte Carlo study which shows that the long-range interactions…
Entanglement entropy in long-range harmonic oscillators
M. Ghasemi Nezhadhaghighi, M. A. Rajabpour
We study the Von Neumann and Rényi entanglement entropy of long-range harmonic oscillators (LRHO) by both theoretical and numerical means. We show that the entanglement entropy in…
Spin interfaces in the Ashkin-Teller model and SLE
Y. Ikhlef, M. A. Rajabpour
We investigate the scaling properties of the spin interfaces in the Ashkin-Teller model. These interfaces are a very simple instance of lattice curves coexisting with a fluctuating…
Geometrical exponents of contour loops on synthetic multifractal rough surfaces: multiplicative hierarchical cascade p-model
S. Hosseinabadi, M. A. Rajabpour, M. Sadegh Movahed +1
In this paper, we study many geometrical properties of contour loops to characterize the morphology of synthetic multifractal rough surfaces, which are generated by multiplicative…
First passage time processes and subordinated SLE
M. Ghasemi Nezhadhaghighi, M. A. Rajabpour, S. Rouhani
We study the first passage time processes of anomalous diffusion on self similar curves in two dimensions. The scaling properties of the mean square displacement and mean first pas…
Contour lines of the discrete scale invariant rough surfaces
M. Ghasemi Nezhadhaghighi, M. A. Rajabpour
We study the fractal properties of the 2d discrete scale invariant (DSI) rough surfaces. The contour lines of these rough surfaces show clear DSI. In the appropriate limit the DSI…