Tootfinder

An Evaluation of External Magnetic Flux Error in Magnet-Moving Kibble balances
Yongchao Ma, Wei Zhao, Songling Huang, Shisong Li
https://arxiv.org/abs/2508.21604 https://…

An Evaluation of External Magnetic Flux Error in Magnet-Moving Kibble balances
The magnet-moving measurement scheme in Kibble balances avoids displacing force-sensitive components, such as the weighing cell, and enables a broader magnetic profile measurement range during the velocity phase. However, this mechanism introduces the risk of asymmetry in the $Bl$ measurement due to external magnetic flux, leading to a potential systematic error in the final measurement results. Using the Tsinghua tabletop Kibble balance magnet as a case study, this paper investigates the error…

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Machine learning topological defect formation
Fumika Suzuki, Ying Wai Li, Wojciech H. Zurek
https://arxiv.org/abs/2508.20347 https://arxiv.org/pdf/2508.203…

Machine learning topological defect formation
According to the Kibble-Zurek mechanism (KZM), the density of topological defects created during a second-order phase transition is determined by the correlation length at the freeze-out time. This suggests that the final configuration of topological defects in such a transition is largely established during the impulse regime, soon after the critical point is traversed. Motivated by this, we conjecture that machine learning (ML) can predict the final configuration of topological defects based …

Circulation Statistics and Migdal Area Rule Beyond the Kibble-Zurek Mechanism in a Newborn Bose-Einstein Condensate
Matteo Massaro, Seong-Ho Shinn, Mithun Thudiyangal, Adolfo del Campo
https://arxiv.org/abs/2508.11047

Circulation Statistics and Migdal Area Rule Beyond the Kibble-Zurek Mechanism in a Newborn Bose-Einstein Condensate
The Kibble-Zurek mechanism (KZM) predicts that a newly formed superfluid prepared by a finite-time thermal quench is populated with vortices. The universality of vortex number statistics, beyond KZM, enables the characterization of circulation statistics within any region of area $A$ enclosed by a loop $C$. Migdal's minimal area rule of classical turbulence predicts that the probability density function of circulation around a closed contour is independent of the contour's shape. We verify the …

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Quenching, Fast and Slow: Breaking Kibble-Zurek Universal Scaling by Jumping along Geodesics
Thi Ha Kyaw, Guillermo Romero, Gaurav Saxena
https://arxiv.org/abs/2510.08528 https:…

Quenching, Fast and Slow: Breaking Kibble-Zurek Universal Scaling by Jumping along Geodesics
A major drawback of adiabatic quantum computing (AQC) is fulfilling the energy gap constraint, which requires the total evolution time to scale inversely with the square of the minimum energy gap. Failure to satisfy this condition violates the adiabatic approximation, potentially undermining computational accuracy. Recently, several approaches have been proposed to circumvent this constraint. One promising approach is to use the family of adiabatic shortcut procedures to fast-forward AQC. One c…

Topological Defect Formation Beyond the Kibble-Zurek Mechanism in Crossover Transitions with Approximate Symmetries
Peng Yang, Chuan-Yin Xia, Sebastian Grieninger, Hua-Bi Zeng, Matteo Baggioli
https://arxiv.org/abs/2508.05964

Topological Defect Formation Beyond the Kibble-Zurek Mechanism in Crossover Transitions with Approximate Symmetries
The formation of topological defects during continuous second-order phase transitions is well described by the Kibble-Zurek mechanism (KZM). However, when the spontaneously broken symmetry is only approximate, such transitions become smooth crossovers, and the applicability of KZM in these scenarios remains an open question. In this work, we address this problem by analyzing both a weakly coupled Ginzburg-Landau model and a strongly coupled holographic setup, each featuring pseudo-spontaneous b…

Kibble-Zurek Scaling and Spatial Statistics in Quenched Binary Bose Superfluids
Subhadeep Patra, Arko Roy, Seong-Ho Shinn, Adolfo del Campo, Mithun Thudiyangal
https://arxiv.org/abs/2510.12770

Kibble-Zurek Scaling and Spatial Statistics in Quenched Binary Bose Superfluids
We study how gradually changing the chemical potential causes a two-dimensional binary Bose gas to condense from vacuum to finite density, resulting in either a mixed (miscible) or separated (immiscible) state depending on interaction strengths. In the immiscible case, random domains form, and their number, boundary length, and average size at the point of equilibration follow universal Kibble-Zurek (KZ) scaling with the cooling rate. These patterns continue to evolve in a self-similar way whil…

An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
Nanjia Li, Weibo Liu, Yongchao Ma, Wei Zhao, Songling Huang, Shisong Li
https://arxiv.org/abs/2510.04729

An Approach for Restoring Magnetic Field Uniformity in Openable BIPM-Type Kibble Balance Magnets
The Kibble balance realizes the kilogram by linking mechanical and electrical quantities via a magnet system. In an improved BIPM-type magnet design by Tsinghua University, an open/close surface was incorporated, facilitating operation. However, an unavoidable mechanical air gap at the splitting plane introduces asymmetry in the magnetic flux density profile, degrading field uniformity. This study proposes a two-step yoke compensation method to restore symmetry by adjusting the upper outer yoke…

Driven dynamics of localization phase transition in the Aubry-Andr\'{e} model with initial gapless extended states
Xin-Yu Wang, Wen-Jing Yu, Yue-Mei Sun, Liang-Jun Zhai
https://arxiv.org/abs/2509.06358

Driven dynamics of localization phase transition in the Aubry-André model with initial gapless extended states
Recently, the driven dynamics of localization phase transitions have garnered growing interest. However, studies so far have mainly considered initial localized states, whose driven dynamics follow the Kibble-Zurek mechanism (KZM). In this study, we investigate the driven dynamics of the localization phase transition in the Aubry-André (AA) model starting from a gapless extended state, which violates the adiabatic-impulse scenario of KZM. By linearly driving the quasiperiodic potential strengt…

Universal Driven Critical Dynamics near the Boundary
Yu-Rong Shu, Shuai Yin
https://arxiv.org/abs/2509.10049 https://arxiv.org/pdf/2509.10049

Universal Driven Critical Dynamics near the Boundary
The celebrated Kibble-Zurek mechanism (KZM) describes the scaling of physical quantities when external parameters sweep through a critical point. Boundaries are ubiquitous in real systems, and critical behaviors near the boundary have attracted extensive research. Different boundary universality classes, including ordinary, special, extraordinary, and surface transitions, have been identified. However, the driven critical dynamics near boundaries remains unexplored. Here, we systematically inve…