Zobrazeno 1 - 10
of 950
pro vyhledávání: '"Haque, S A"'
Publikováno v:
JHEP10(2024)101
We show that quantum circuit complexity for the unitary time evolution operator of any time-independent Hamiltonian is bounded by linear growth at early times, independent of any choices of the fundamental gates or cost metric. Deviations from linear
Externí odkaz:
http://arxiv.org/abs/2406.12990
Spread complexity measures the minimized spread of quantum states over all choices of basis. It generalizes Krylov operator complexity to quantum states under continuous Hamiltonian evolution. In this paper, we study spread complexity in the context
Externí odkaz:
http://arxiv.org/abs/2406.07491
Publikováno v:
Annals of Physics Volume 470, November 2024, 169829
A bouncing Universe avoids the big-bang singularity. Using the time-like and null Raychaudhhuri equations, we explore whether the bounce near the big-bang, within a broad spectrum of modified theories of gravity, allows for cosmologically relevant po
Externí odkaz:
http://arxiv.org/abs/2405.09714
Publikováno v:
JHEP 05 (2024) 058
In this work, we extend previous results, demonstrating how complexity in an open quantum system can identify decoherence between two fields, even in the presence of an accelerating background. Using the curved-space Caldeira-Leggett two-field model
Externí odkaz:
http://arxiv.org/abs/2401.12134
Krylov complexity is a measure of operator growth in quantum systems, based on the number of orthogonal basis vectors needed to approximate the time evolution of an operator. In this paper, we study the Krylov complexity of a $\mathsf{PT}$-symmetric
Externí odkaz:
http://arxiv.org/abs/2312.15790
Publikováno v:
JHEP 10 (2023) 157
We study the spectral properties of two classes of random matrix models: non-Gaussian RMT with quartic and sextic potentials, and RMT with Gaussian noise. We compute and analyze the quantum Krylov complexity and the spectral form factor for both of t
Externí odkaz:
http://arxiv.org/abs/2307.15495
Publikováno v:
Eur. Phys. J. C (2024) 84:260
Quantum information theory has recently emerged as a flourishing area of research and quantum complexity, one of its powerful measures, is being applied for investigating complex systems in many areas of physics. Its application to practical physical
Externí odkaz:
http://arxiv.org/abs/2305.17025
We develop computational tools necessary to extend the application of Krylov complexity beyond the simple Hamiltonian systems considered thus far in the literature. As a first step toward this broader goal, we show how the Lanczos algorithm that iter
Externí odkaz:
http://arxiv.org/abs/2212.13758
Source code segment authorship identification is the task of identifying the author of a source code segment through supervised learning. It has vast importance in plagiarism detection, digital forensics, and several other law enforcement issues. How
Externí odkaz:
http://arxiv.org/abs/2212.05610
Publikováno v:
Phys.Rev.D 107 (2023) 10
In this paper, we compare the saturation time scales for complexity, linear entropy and entanglement negativity for two open quantum systems. Our first model is a coupled harmonic oscillator, where we treat one of the oscillators as the bath. The sec
Externí odkaz:
http://arxiv.org/abs/2210.09268