activity
20202026
most citedSurprises in the Deep Hilbert Space of all-to-all systems: From super-exponential scrambling to slow entanglement growth

19 citations · 47 across the 12 of their papers we have counts for

collaborators

12 papers

math.RA2026

Symmetric operads of GK-dimension one

Yu Li, Zihao Qi, Yongjun Xu +3

We prove that there is no finitely generated symmetric operad of Gelfand-Kirillov dimension strictly between 1 and 2 that answers an open question posted in 2020. We also classify…

quant-ph2025

Dissipative Yao-Lee Spin-Orbital Model: Exact Solvability and Symmetry Breaking

Zihao Qi, Yuan Xue

Exactly solvable dissipative models provide an analytical tool for studying the relaxation dynamics in open quantum systems. In this work, we study an exactly solvable model based…

math.RA2024

Formal deformations, cohomology theory and -structures for differential Lie algebras of arbitrary weight

Weiguo Lyu, Zihao Qi, Jian Yang +1

Generalising a previous work of Jiang and Sheng, a cohomology theory for differential Lie algebras of arbitrary weight is introduced. The underlying -structure on the…

quant-ph2023★ 19 cited

Surprises in the Deep Hilbert Space of all-to-all systems: From super-exponential scrambling to slow entanglement growth

Zihao Qi, Thomas Scaffidi, Xiangyu Cao

The quantum dynamics of spin systems with uniform all-to-all interaction are often studied in the totally symmetric space (TSS) of maximal total spin. However the TSS states are at…

math.RA2023

Gröbner-Shirshov bases and linear bases for free multi-operated algebras over algebras with applications to differential Rota-Baxter algebras and integro-differential algebras

Zuan Liu, Zihao Qi, Yufei Qin +1

Quite much recent studies has been attracted to the operated algebra since it unifies various notions such as the differential algebra and the Rota-Baxter algebra. An -operated…

math.RA2022

Operads with trivial -actions

Yu Li, Zihao Qi, Yongjun Xu +3

We study operads with trivial -actions and prove an equivalence between the category of -trivial operads and that of pseudo-graded-Perm associative algebras…

math.RA2021

Gröbner-Shirshov bases and linear bases for free differential type algebras over algebras

Zihao Qi, Yufei Qin, Guodong Zhou

We study a question which can be roughly stated as follows: Given a (unital or nonunital) algebra together with a Gröbner-Shirshov basis , consider the free operated algebra…

cond-mat.mes-hall2021★ 17 cited

Universal nonadiabatic energy pumping in a quasiperiodically driven extended system

Zihao Qi, Gil Refael, Yang Peng

The paradigm of Floquet engineering of topological states of matter can be generalized into the time-quasiperiodic scenario, where a lower dimensional time-dependent system maps in…

math.KT2021

Poisson cohomology of plane Poisson structures with isolated singularities revisited

Zihao Qi, Guodong Zhou

Continuing a work of Ph.~Monnier, we determine the Gerstenhaber algebra structure over the Poisson cohomology groups for a large class of Poisson structures with isolated singulari…

math.RA2021★ 6 cited

Free objects and Gröbner-Shirshov bases in operated contexts

Zihao Qi, Yufei Qin, Kai Wang +1

This paper investigates algebraic objects equipped with an operator, such as operated monoids, operated algebras etc. Various free object functors in these operated contexts are ex…

cond-mat.mes-hall2020★ 1 cited

Robust Flat Bands with Tunable Energies in Honeycomb Superlattices

Zihao Qi, Eric Bobrow, Yi Li

Flat bands in lattice models have provided useful platforms for studying strong correlation and topological physics. Recently, honeycomb superlattices have been shown to host flat…

math.RA2020★ 4 cited

Growth of nonsymmetric operads

Zihao Qi, Yongjun Xu, James J. Zhang +1

The paper concerns the Gelfand-Kirillov dimension and the generating series of nonsymmetric operads. An analogue of Bergman's gap theorem is proved, namely, no finitely generated l…