Journal Club Information
2nd semester
| Date: | Mar.09, 2018 (Fri) |
| Room: | 13,14番教室 |
| Speaker: | Arai,Ota,Sasaki,Shindo,Yokoyama |
| Title: | 2018年度B4卒業研究発表会 |
佐々木：
「南部・ゴールドストーン粒子について」[PDF] 進藤・荒井:
「ヒッグス機構について」[PDF][PDF] 横山・太田：
「ニュートリノの発見とその振動」「物質効果を考慮したニュートリノ振動」[PDF][PDF]
「南部・ゴールドストーン粒子について」[PDF] 進藤・荒井:
「ヒッグス機構について」[PDF][PDF] 横山・太田：
「ニュートリノの発見とその振動」「物質効果を考慮したニュートリノ振動」[PDF][PDF]
| Date: | Feb.16, 2018(Fri) 16:20~ |
| Room: | A405 |
| Speaker: | Sakurai |
| Title: | Electroweak Global Strings with Flux Tubes |
Abstract:
We show that for a large range of parameters in a SU(2)_L ¥times U(1) electroweak theory with two Higgs doublets there may exist classically stable flux tubes of Z boson magnetic field．In a limit of an extra global ¥tilde{U}_1 symmetry，these flux tubes become topologically stable．These results are automatically valid even if ¥tilde{U}_1 is gauged．
Reference:
G.Dvali and G.Senjanovi, Phys.Rev.Lett. 71, 2376 (1993)
We show that for a large range of parameters in a SU(2)_L ¥times U(1) electroweak theory with two Higgs doublets there may exist classically stable flux tubes of Z boson magnetic field．In a limit of an extra global ¥tilde{U}_1 symmetry，these flux tubes become topologically stable．These results are automatically valid even if ¥tilde{U}_1 is gauged．
Reference:
G.Dvali and G.Senjanovi, Phys.Rev.Lett. 71, 2376 (1993)
PDF
| Date: | Jan.26, 2018 (Fri) 16:20~ |
| Room: | C301 |
| Speaker: | Okada |
| Title: | Dark Matter in the Minimal U(1)_X Extended Standard Model |
PDF
| Date: | Dec.8, 2017 (Fri) 16:20~ |
| Room: | 405 |
| Speaker: | Endo |
| Title: | Covariant Anomalies in Cohomology Approach |
| Date: | Nov.24, 2017 (Fri) 16:20~ |
| Room: | 405 |
| Speaker: | Eto |
| Title: | Finite energy electroweak dyon |
Abstract:
The latest MoEDAL experiment at LHC to detect the electroweak monopole makes the theoretical prediction of the monopole mass an urgent issue. We discuss three different ways to estimate the mass of the electroweak monopole. We first present the dimensional and scaling arguments which indicate the monopole mass to be around 4 to 10 TeV. To justify this we construct finite energy analytic dyon solutions which could be viewed as the regularized Cho–Maison dyon, modifying the coupling strength at short distance. Our result demonstrates that a genuine electroweak monopole whose mass scale is much smaller than the grand unification scale can exist, which can actually be detected at the present LHC.
Reference:
Eur. Phys. J. C (2015) 75: 67.
authors:Kyoungtae Kimm, J. H. Yoon, Y. M. Cho
The latest MoEDAL experiment at LHC to detect the electroweak monopole makes the theoretical prediction of the monopole mass an urgent issue. We discuss three different ways to estimate the mass of the electroweak monopole. We first present the dimensional and scaling arguments which indicate the monopole mass to be around 4 to 10 TeV. To justify this we construct finite energy analytic dyon solutions which could be viewed as the regularized Cho–Maison dyon, modifying the coupling strength at short distance. Our result demonstrates that a genuine electroweak monopole whose mass scale is much smaller than the grand unification scale can exist, which can actually be detected at the present LHC.
Reference:
Eur. Phys. J. C (2015) 75: 67.
authors:Kyoungtae Kimm, J. H. Yoon, Y. M. Cho
PDF
| Date: | Oct.27, 2017 (Fri) 16:20~ |
| Room: | 405 |
| Speaker: | Arai |
| Title: | N=2 super Yang-Mills theory in Projective Superspace |
Abstract:
We find a formulation of N=2 supersymmetric Yang-Mills theory in Projective superspace.
In particular we find an expression for the field strength in terms of an unconstrained prepotential which is desirable when quantizing the theory.
We use this to write the action in terms of the prepotential and show that it reduces to the known result in the abelian limit.
Reference:
arXiv:1706.07000
authors:Ariunzul Davgadorj and Rikard von Unge
We find a formulation of N=2 supersymmetric Yang-Mills theory in Projective superspace.
In particular we find an expression for the field strength in terms of an unconstrained prepotential which is desirable when quantizing the theory.
We use this to write the action in terms of the prepotential and show that it reduces to the known result in the abelian limit.
Reference:
arXiv:1706.07000
authors:Ariunzul Davgadorj and Rikard von Unge
PDF