Change search
ReferencesLink to record
Permanent link

Direct link
The Point-Split Method and the Linking Number of Space Curves
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.
2014 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This is a report on research done in the field of mathematical physics. It is an investigation of the concept of the linking number between two simple and closed spatial curves. The linking number is a topological invariant with scientific applications ranging from DNA biology to Topological Quantum Field Theory. Our aim is to study C ̆alug ̆areanu’s theorem, also called White’s formula, which relates the linking number to the concepts of twist and writhe. We are interested in the limit of the two curves as they approach each other. To regulate this, we introduce a regularization method that utilizes a point-split. Further we explore if the result is dependent on how the regularization is introduced. Therefor we inflict an asymmetry in the regularization, with a parameter a in the point-split intervals, to check whether the result becomes dependent on a or not. We find that the result is independent of the parameter a.

Place, publisher, year, edition, pages
2014. , 11 p.
Keyword [en]
Links, The Linking Number, Gauss Linking number, Point-split method, point-splitting, White's formula, C ̆alug ̆areanu, Calugareanu's relation, Twist, Writhe, twisting, Writhing
National Category
Other Physics Topics
URN: urn:nbn:se:uu:diva-229641OAI: diva2:737291
Educational program
Bachelor Programme in Physics
Available from: 2014-08-14 Created: 2014-08-12 Last updated: 2014-08-14Bibliographically approved

Open Access in DiVA

The Point-Split Method and the Linking Number of Space Curves(842 kB)225 downloads
File information
File name FULLTEXT02.pdfFile size 842 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Forsberg, Timmy
By organisation
Theoretical Physics
Other Physics Topics

Search outside of DiVA

GoogleGoogle Scholar
Total: 225 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 366 hits
ReferencesLink to record
Permanent link

Direct link