منابع مشابه
Discrete Theta-Angles and Confinement
We study a topological field theory describing confining phases of gauge theories in four dimensions. It can be formulated on a lattice using a discrete 2-form field talking values in a finite abelian group (the magnetic gauge group). We show that possible theta-angles in such a theory are quantized and labeled by quadratic functions on the magnetic gauge group. When the theta-angles vanish, th...
متن کاملTheta*: Any-Angle Path Planning on Grids
Grids with blocked and unblocked cells are often used to represent terrain in computer games and robotics. However, paths formed by grid edges can be sub-optimal and unrealistic looking, since the possible headings are artificially constrained. We present Theta*, a variant of A*, that propagates information along grid edges without constraining the paths to grid edges. Theta* is simple, fast an...
متن کاملSoftly Broken MQCD and the Theta Angle
We consider a family of non-supersymmetric MQCD five-brane configurations introduced by Witten, and discuss the dependence of the curves on the microscopic theta angle and its relation with CP. We find evidence for a non-trivial spectral flow of the curves (vacua) and for the level-crossing of adjacent curves at a particular value of the theta angle, with spontaneous breaking of CP symmetry, pr...
متن کاملCo-relation between Anb Angle, Wits Value & Snp Plane Angle
ANB angle & Wits value are used to asses the Sagital pattern of the patient cephalometrically. The two variables are dependent on change in the Antero-posterior & vertical position of Point A. SNP plane angle determines the rotation change in position of Palatal plane with reference to SN plane. This rotational change might have an impact on the position of point A and thus the ANB angle and wi...
متن کاملAngle-Restricted Tours in the Plane
For a given set A C_ (-Tr; +Tr] of angles, the problem "Angle-Restricted Tour" (ART) is to decide whether a set P of n points in the Euclidean plane allows a closed directed tour consisting of straight line segments, such that all angles between consecutive line segments are from the set A. We present a variety of algorithmic and combinatorial results on this problem. In particular, we show tha...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2017
ISSN: 1029-8479
DOI: 10.1007/jhep11(2017)041