标题： 纠缠体和表面：UTe$_2$的情况 显示英文标题

标题： Intertwining bulk and surface: the case of UTe$_2$

摘要： UTe$_2$近年来已成为众多实验和理论研究的焦点，因为它被认为是一种奇宇称体超导体。 其表面也已被探测，揭示出电荷密度波（CDW）、配对密度波（PDW）和时间反演对称性破缺（TRSB）。 在本工作中，我们提出，UTe$_2$表面和体内的序参量之间的相互作用可能对于解释通过表面探测器在此材料中检测到的一些异常特性至关重要。 通过现象学分析，我们可以解释 UTe$_2$表面上观察到的三个独特实验特征：i）体超导态上临界场处 CDW 序的明显抑制；ii）与 CDW 相关的傅里叶峰在磁场作用下的不平衡；iii）在体超导临界温度下 TRSB 的出现及其场可调性。 此外，我们提出了具体的实验检查方法来验证我们的推测，我们认为这些检查可以迅速完成。 显示英文摘要

摘要： UTe$_2$ has been the focus of numerous experimental and theoretical studies in recent years, as it is recognized as an odd-parity bulk superconductor. Its surface has also been probed, revealing charge density wave (CDW), pair density wave (PDW), and time-reversal symmetry breaking (TRSB). In this work, we propose that the interplay between the order parameters observed on the surface and in the bulk of UTe$_2$ may be crucial in explaining some of the unusual features detected by surface probes in this material. Through a phenomenological analysis, we can account for three distinctive experimental signatures observed on the surface of UTe$_2$: i) the apparent suppression of CDW order at the upper critical field of the bulk superconducting state; ii) the magnetic field-induced imbalance of the Fourier peaks associated with the CDW; iii) the onset of TRSB at the bulk superconducting critical temperature and its field-trainability. Furthermore, we propose specific experimental checks to validate our conjecture, which we believe could be promptly achieved.