二维圆环上晶格超杨米尔斯验证全息图:参数与形状效应

需积分: 3 0 下载量 105 浏览量 更新于2024-07-16 收藏 1.98MB PDF 举报
本文主要探讨了在2-维圆环(2-torus)上应用晶格超级杨米尔斯理论来检验全息原理的有效性。具体来说,研究者聚焦于最大超对称SU(N) Yang-Mills理论在欧几里得signature下的压缩,这种理论在大型N极限下被认为与IIA和IIB型超重力中的黑洞解有关。作者引入了一种特殊的边界条件——反周期性的“热”费米子边界条件,仅在圆环的一个方向上应用。 关键的区别在于,与一维量子力学中的单一温度变量不同,这里的系统有三个参数:两个决定扁平圆环的几何形状,即其尺寸和偏斜角度,以及一个无因次温度。矩形的欧几里得圆环对应于热力学中的热态,而可倾斜的圆环则能改变对全息双黑洞预测的影响,从而提供了一个测试全息原理的新视角。 研究人员利用晶格规范理论进行模拟,这个方法特别适用于处理超对称公式中的特定偏斜情况。他们在N=16的极限下进行了多组模拟,涵盖了不同的晶格间距,以确保结果的精确性和可靠性。他们观察到了两个预期的黑洞相,这些相之间的转变与基于格雷戈里-拉弗莱姆过渡的引力理论预测相符合。 这项工作不仅验证了全息原理在二维圆环上的应用,还展示了如何通过几何形状的调整来探索理论的物理内涵,这对于理解弦理论和黑洞物理学中的复杂现象具有重要意义。通过晶格模拟技术,研究人员能够将高维的理论问题转化为可计算的数值结果,为理论物理的实证验证提供了有力的工具。

extern UFUNEXPORT int UF_MODL_ask_face_data( tag_t face ,/* Face obj_id / int * type ,/ <O> Face type is NX surface type code 16 = cylinder 17 = cone 18 = sphere 19 = revolved (toroidal) 20 = extruded 22 = bounded plane 23 = fillet (blend) 43 = b-surface 65 = offset surface 66 = foreign surface / double point[] ,/ <O,len:3> Point information is returned according to the value of type as follows. Plane = Position in plane Cylinder= Position on axis Cone = Position on axis Sphere = Center position Torus = Center position Revolved = Position on axis / double dir[] ,/ <O,len:3> Direction information is returned according to the value of type as follows. Plane = Normal direction Cylinder= Axis direction Cone = Axis direction Torus = Axis direction Revolved = Axis direction / double box[] ,/ <O,len:6> Face boundary. The coordinates of the opposite corners of a rectangular box with sides parallel to X, Y, and Z axes (Absolute Coordinate System) are returned. The box contains the specified face and is usually close to the minimum possible size, but this is not guaranteed. box[0] = Xmin box[1] = Ymin box[2] = Zmin box[3] = Xmax box[4] = Ymax box[5] = Zmax / double * radius ,/ <O> Face major radius: For a cone, the radius is taken at the point[3] position on the axis. For a torus, the radius is taken at the major axis. / double * rad_data ,/ <O> Face minor radius: only a torus or cone has rad_data as a minor radius. For a cone, rad_data is the half angle in radians. For a torus, rad_data is taken at the minor axis. / int * norm_dir / <O> Face normal direction: +1 if the face normal is in the same direction as the surface normal (cross product of the U- and V-derivative vectors), -1 if reversed. */ ); 详解

2023-06-01 上传