Tootfinder

(A)Symmetric Complexity and the Quantum Mpemba Effect
Cameron Beetar, Jeff Murugan, Hendrik J. R. van Zyl
https://arxiv.org/abs/2509.08078 https://arxiv.or…

(A)Symmetric Complexity and the Quantum Mpemba Effect
The Quantum Mpemba Effect (QME) -- the counter-intuitive phenomenon where states further from equilibrium can relax faster than those closer to it -- challenges standard expectations of quantum thermalization. In this work, we introduce Krylov complexity as a sensitive diagnostic for the QME. We show that Krylov spread complexity encodes the asymmetry essential to the effect, and we define a new class of projective (a)symmetric complexities that sharpen this connection. Strikingly, the structur…

#ScribesAndMakers - 10 Oct. Shameless self-promotion day.
Neat demos of incremental/pseudoinfinite PCG ideas:
https://cs.wellesley.edu/~pmwh/labyrinfinite/
https://cs.wellesley.edu/~pmwh/effervescent/
https://cs.wellesley.edu/~pmwh/hydrodendron/
Incremental reversible RNG library for PCG:
https://cs.wellesley.edu/~pmwh/anarchy
Exploration graphs library:
https://pypi.org/project/exploration/
With visualizer:
https://cs.wellesley.edu/~pmwh/mvmap/egviewer/explorationViewer/viewer
Not quite final form but playable pseudoinfinite minesweeper game:
https://cs.wellesley.edu/~pmwh/chlorophyll/

Quantum Mpemba effect in a four-site Bose-Hubbard model
Asad Ali, M. I. Hussain, Hamid Arian Zad, H. Kuniyil, M. T. Rahim, Saif Al-Kuwari, Saeed Haddadi
https://arxiv.org/abs/2509.06937

Quantum Mpemba effect in a four-site Bose-Hubbard model
We investigated the quantum Mpemba effect (QME) in a one-dimensional Bose-Hubbard model across clean and disordered regimes using exact numerical technique of a four-site lattice under Lindblad dynamics with local dephasing noise. By systematically varying hopping strength, onsite interactions, Stark potentials, and random disorder, we probe relaxation dynamics toward a common steady state using trace distance, relative entropy, entanglement asymmetry, and $\ell_1$-norm of coherence metrics. Ou…

The Mpemba Effect in Pure Water Has a Stochastic Origin. Experimental and Theoretical Resolution of the Paradox
Andrei A. Klimov, Alexei V. Finkelstein
https://arxiv.org/abs/2508.05607

The Mpemba Effect in Pure Water Has a Stochastic Origin. Experimental and Theoretical Resolution of the Paradox
The "Mpemba effect" is the name given to the assertion that hot water freezes quicker than cold water1 or, in a modern and more general form, that the system that is initially more distant from its equilibrium state comes to this state earlier2. This counterintuitive statement seems to breach fundamental thermodynamic and kinetic laws; however, numerous experiments3-10 with classical and quantum systems demonstrate this paradoxical Mpemba effect, leading to extensive discssions in prominent sci…

Entanglement Asymmetry and Quantum Mpemba Effect for Non-Abelian Global Symmetry
Harunobu Fujimura, Soichiro Shimamori
https://arxiv.org/abs/2509.05597 https://

Entanglement Asymmetry and Quantum Mpemba Effect for Non-Abelian Global Symmetry
Entanglement asymmetry is a measure that quantifies the degree of symmetry breaking at the level of a subsystem. In this work, we investigate the entanglement asymmetry in $\widehat{su}(N)_k$ Wess-Zumino-Witten model and discuss the quantum Mpemba effect for SU$(N)$ symmetry, the phenomenon that the more symmetry is initially broken, the faster it is restored. Due to the Coleman-Mermin-Wagner theorem, spontaneous breaking of continuous global symmetries is forbidden in $1+1$ dimensions. To circ…

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Modest Mouse:
🎵 Lounge (Closing Time)
#ModestMouse
https://modestmouse.bandcamp.com/track/lounge
https://open.spotify.com/track/7MfNEVeRcksjZ5fcqV5UeB

Quantum Pontus-Mpemba Effects in Real and Imaginary-time Dynamics
Hui Yu, Jiangping Hu, Shi-Xin Zhang
https://arxiv.org/abs/2509.01960 https://arxiv.org/pd…

Quantum Pontus-Mpemba Effects in Real and Imaginary-time Dynamics
The quantum Pontus-Mpemba effect (QPME) is a counterintuitive phenomenon wherein a quantum system relaxes more rapidly through a two-step evolution protocol than through direct evolution under a symmetric Hamiltonian alone. In this protocol, the system first evolves under a symmetry-breaking Hamiltonian and then switches to a symmetric one. We demonstrate that QPME occurs under both real-time and imaginary-time dynamics with respect to $U(1)$-symmetry. Using tilted ferromagnetic initial states,…

Quantum Mpemba-like effect in Unruh thermalization
Zihao Wang, Wenjing Chen, Si-Wei Han, Xiaoshan Feng, Linmu Qiao, Zhichun Ouyang, Jun Feng
https://arxiv.org/abs/2509.05756 htt…

Quantum Mpemba-like effect in Unruh thermalization
We revisit the thermal nature of the Unruh effect within a quantum thermodynamic framework. For a Unruh-deWitt (UDW) detector in $n$-dimensional Minkowski spacetime, we demonstrate that its irreversible thermalization to a Gibbs equilibrium state follows distinct trajectories on the Bloch sphere, which depend on the types of fields the detector interacts with, as well as the spacetime dimensionality. Using thermodynamic process functions, particularly quantum coherence and heat that form the qu…

Temperature overshooting in the Mpemba effect of frictional active matter
Alexander P. Antonov, Hartmut L\"owen
https://arxiv.org/abs/2507.23137 https://

Temperature overshooting in the Mpemba effect of frictional active matter
The traditional Mpemba effect refers to an anomalous cooling phenomenon when an initial hotter system cools down faster than an initial warm system. Such counterintuitive behavior has been confirmed and explored across phase transitions in condensed matter systems and also for colloidal particles exposed to a double-well potential. Here we predict a frictional Mpemba effect for a macroscopic body moving actively on a surface governed by Coulomb (dry) friction. For an initial high temperature, r…

Quantum Mpemba Effect in Dissipative Spin Chains at Criticality
Zijun Wei, Mingdi Xu, Xiang-Ping Jiang, Lei Pan
https://arxiv.org/abs/2508.18906 https://ar…

Quantum Mpemba Effect in Dissipative Spin Chains at Criticality
The Quantum Mpemba Effect (QME) is the quantum counterpart of the classical Mpemba effect--a counterintuitive phenomenon in which a system initially at a higher temperature relax to thermal eauilibrium faster than one at a lower temperature. In this work, we investigate the QME in one-dimensional quantum spin chains coupled to a Markovian environment. By analyzing the full relaxation dynamics governed by the Lindblad master equation, we reveal the emergence of a strong quantum Mpemba effect at …