Papers

Peng Guo, Paul LeVan, Frank X. Lee +1 more·Mar 31, 2026

To overcome the fast oscillatory behavior of correlation functions for extracting scattering phase shift in real-time quantum simulations encountered in Ref.\cite{Guo:2026qkx}, we propose and test two solutions in the present work. One is to simulate...

Caio B. Naves, Thomas Klein Kvorning, Jonas Larson·Mar 31, 2026

For Hamiltonian systems, level statistics provide a faithful diagnostic of quantum chaos. By analogy, the statistics of the Lindbladian spectrum are often used in open quantum systems, and the Grobe-Haake-Sommers conjecture proposes that systems with...

Nisa Ara, Arpan Bhattacharyya, Nilachal Chakrabarti +2 more·Mar 31, 2026

The $1+1$ dimensional $Z_2$ gauge theory is the simplest model that allows for quantum computation or quantum simulation to probe the fundamental aspects of a gauge theory coupled with dynamical fermions. To reliably benchmark such a system, it is cr...

Durgesh Pandey, Ankit Kumar Das, P. Arumugam·Mar 30, 2026

Non-Hermitian operators naturally arise in the description of open quantum systems, which exhibit features such as resonances and decay processes, where the associated eigenvalues are complex. Standard quantum algorithms, including the Variational Qu...

Nilachal Chakrabarti, Nisa Ara, Neha Nirbhan +2 more·Mar 30, 2026

The $1+1$ dimensional $\mathbb Z_2$ gauge theory is the simplest model that allows for quantum simulation to probe the fundamental aspects of a gauge theory coupled with dynamical fermions. To reliably benchmark such a system, it is crucial to unders...

Christopher Ekman, Emil J. Bergholtz, Paolo Molignini·Mar 30, 2026

In one dimension, strongly correlated gapless systems are highly constrained due to conformal invariance, leading to the decoupling of low energy degrees of freedom corresponding to different symmetry sectors. The most familiar example of this is spi...

Mansour Haghighat, Ali Nouri·Mar 30, 2026

We construct an exactly solvable relativistic model that embeds the anomalous inverse-square interaction into a non-Hermitian Klein-Gordon field theory through a purely imaginary, scale-invariant scalar potential. The stationary field equation reduce...

Ji-Long Dong, Shi-Liang Zhu, Dan-Wei Zhang·Mar 30, 2026

The generation of complex states like multifractal critical states has been an outstanding challenge in both classical and quantum physics. Here we propose a general framework, termed the imaginary gauge phase imprint, allowing to engineer rigorous w...

Hua-Yu Bai, Yang Chen, Guang-Can Guo +2 more·Mar 27, 2026

It is well known that Hermitian and non-Hermitian models exhibit distinct physics and require different theoretical tools. In this work, we propose a unified generating-function framework for both classes with generic boundary conditions and local im...

Shu Hamanaka·Mar 27, 2026

The non-Hermitian skin effect is an anomalous localization phenomenon induced by nonreciprocal dissipation and has attracted considerable attention in recent years both theoretically and experimentally. In this article, we review the multifractal asp...

Carlos I. Pérez Sánchez·Mar 26, 2026

For a family of two-matrix models \[ \frac{1}{2} \operatorname{Tr}(A^2+B^2) - \frac{g}{4} \operatorname{Tr}(A^4+B^4) - \begin{cases} \frac{h}{2} \operatorname{Tr}( A BA B) \\ \frac{h}{4} \operatorname{Tr}( A BA B+ ABBA ) \\ \frac{h}{2} \operatorname{...

Ipsita Mandal·Mar 26, 2026

We develop a systematic framework for determining the nature of exceptional points of $n^{\rm th}$ order (EP$_n$s) in non-Hermitian (NH) systems, represented by complex square matrices. By expressing symmetry-preserving perturbations in the Jordan-no...

Huimin Wang, Yanxin Liu, Zhihao Xu +1 more·Mar 26, 2026

Point-gap topology under periodic boundary conditions and line-gap topology under open boundary conditions are generally inequivalent in non-Hermitian systems. We show that, in chiral non-Hermitian lattices, these two boundary-sensitive topological t...

Yang Yue, Nan Li, Xin Zhang +8 more·Mar 26, 2026

Machine learning (ML) is shaping our exploration of topological matter, whose existence is inherently tied to the geometry of quantum states or energy spectra. In non-Hermitian systems, distinctive spectral geometry can lead to topological braiding o...

Dipendu Halder, Srijata Lahiri, Saurabh Basu·Mar 25, 2026

Non-Hermitian skin effect, which is a unique feature of non-Hermitian systems, exhibits the formation of an extensive number of boundary modes under open boundary conditions. However, its manifestation in higher dimensions remains elusive. In our wor...

Xiangru Chen, Jien Wu, Xingyu Chen +6 more·Mar 25, 2026

Non-Hermitian systems generally host complex spectra that bring unique spectral topologies, leading to the spectral braiding and non-Hermitian skin effect. The experimental exploration of non-Hermitian physics is mainly concentrated in artificial sys...

Qi-Cheng Wu, Yan-Hui Zhou, Biao-liang Ye +4 more·Mar 25, 2026

Exceptional points (EPs) in non-Hermitian systems give rise to enhanced sensitivity and chiral state transfer, which are important for quantum technologies. Although parameter trajectories encircling EPs can control symmetric and chiral state transfe...

Valentin Link·Mar 24, 2026

Dynamics of open quantum systems with structured reservoirs can often be simulated efficiently with tensor network influence functionals. The standard variants of the time-evolving matrix product operator (TEMPO) method are applicable when the system...

Grazia Di Bello, Fabrizio Pavan, Vittorio Cataudella +1 more·Mar 24, 2026

We investigate the relation between non-Hermitian Hamiltonian and Lindblad dynamics in nonequilibrium open quantum systems. Non-Hermitian models can extend phase diagrams and enable sensing advantages, but such effects often rely on postselection, ra...

Mustafa Sarisaman, Murat Taş, Enes Talha Kırca·Mar 24, 2026

In this study, motivated by recent advancements in non-Hermitian physics, we explore new characteristics of Dirac semimetals (DSMs) using the spectral singularities by means of scattering techniques, with the goal of uncovering additional unique prop...