2019年度 素粒子論セミナー
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開始行:
*2019年 [#le173fee]
***[[Seminar]] [#b85254f3]
日時: February 21 (Fri.) 15:00-16:00
場所: Meeting room C at CCS
講演者: Christopher Sachrajda (Southampton)
タイトル: K → ππ decays from lattice QCD
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
「修士論文内部審査」
日時: January 21 (Tue.) 15:00-16:30
場所: Meeting room A at CCS
Hiroyuki Adachi "The Berezin-Toeplitz quantization for t...
Kaishu Saitou "弦理論のドジッター真空について"
Toru Hayama "標準模型有効理論におけるミューオン・電子転...
日時: December 24 (Tue.) 15:00-16:00
場所: Workshop room at CCS
講演者: Tamiaki Yoneya (JPS)
タイトル: Covariantized Matrix Theory
概要:TBA
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: August 27 (Tue.) 15:00-16:00
場所: Meeting room A at CCS
講演者: Kazuki Hasebe (National Institute of Technology,...
タイトル: 代数の拡張に関連した高次元非可換幾何とランダウ...
概要:
数の体系は、実数、複素数から始まり、四元数、八元数、クリ...
この代数の拡張と高次元の非可換幾何球面、非可換双曲体の密...
特にランダウ模型(磁場中の荷電粒子の模型)に基づいて、高...
高次元の量子ホール効果(トポロジカル絶縁体)、南部幾何も...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: July 16 (Tue.) 14:00-15:00
場所: D413
講演者: Yoshio Kikukawa (Univ. of Tokyo)
タイトル: Gauge-invariant path integral measure for the ...
概要:
We consider the lattice formulation of SO(10) chiral gau...
left-handed Weyl fermions in the sixteen dimensional spi...
(16) within the framework of the Overlap fermion/the Gin...
relation. We define a manifestly gauge-invariant path-in...
the left-handed Weyl field using all the components of t...
the right-handed part of which is just saturated complet...
suitable product of the SO(10)-invariant 't Hooft vertic...
right-handed field.
We also discuss the relations of our formulation to other
approaches/proposals to decouple the species-doubling/mi...
freedom. Those include Eichten-Preskill model, Ginsparg-...
fermion model, Domain wall fermion model with the bounda...
term, 4D Topological Insulator/Superconductor with gappe...
and the recent studies on the PMS phase/"Mass without sy...
We clarify the similarity and the difference in technica...
that our proposal is a well-defined and unified testing ...
basic question.
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: July 10 (Wed.) 14:00-15:00
場所: D413
講演者: Yoshio Kikukawa (Univ. of Tokyo)
タイトル: Why is the mission imposible? — Decoupl...
概要:
It is known that the four- and two-dimensional abelian c...
theories of an anomaly free set of Weyl fermions can be ...
lattice preserving the exact gauge invariance. However, ...
fermion approach with Ginsparg-Wilson fermions, it was a...
al. that the mirror fermions do not decouple : in the 34...
Dirac- and Majorana-Yukawa couplings to XY-spin field, t...
function of the (external) gauge field in the mirror sec...
singular non-local behavior in the PMS phase. We re-exam...
seems a "Mission: Impossible" in the 345 model.
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: July 3 (Wed.) 15:00-16:00
場所: Workshop room at CCS
講演者: Masaki Honda (Waseda Univ.)
タイトル: 行列模型に基づく背景磁場付き非可換トーラス上の...
概要:
行列模型は超弦理論の非摂動的な定式化の候補の1つとして注...
本講演では、行列模型の1つであるIKKT模型に基づき、背景磁...
初めに、IKKT模型と、この模型における非可換トーラスの実現...
次に、比較のために、通常のトーラス上に背景磁場を入れた場...
続いて非可換トーラス上のDirac作用素およびゲージ場を導入...
最後に、ゼロモード方程式をどのように解いたかを紹介し、そ...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: June 28 (Fri.) 14:00-15:00
場所: Workshop room at CCS
講演者: Oliver Baer (Humboldt University Berlin)
タイトル: Nucleon-pion-state contamination in lattice ca...
概要:
The nucleon-pion-state contributions to QCD two- and thr...
used in lattice calculations of nucleon form factors are...
perturbation theory. For physically small quark masses t...
states are expected to dominate the excited-state contam...
euclidean time separations. To leading order in chiral p...
the results depend on two experimentally well-known low-...
only and the nucleon-pion-state contribution can be reli...
Most severe is the nucleon-pion-state contribution to th...
scalar form factor $\tilde{G}_P(Q^2)$, which shows a rat...
dependence of $Q^2$ and leads to a 20%-40% underestimati...
momentum transfer. This underestimation is also responsi...
violation of the generalized Goldberger-Treiman relation...
form factors. The prospects for using the ChPT results t...
remove the nucleon-pion-state contributions from the lat...
discussed.
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: June 27 (Thu.) 15:00-16:00
場所: Meeting room A at CCS
講演者: Toshifumi Noumi (Kobe Univ.)
タイトル: Conformal correlators in momentum space and co...
概要:
Recent studies in cosmology have shown that analytic pro...
together with approximate conformal symmetry realized at...
probing new physics at the inflation scale. These cosmol...
boosted research activities on conformal correlators in ...
introducing motivations from the cosmology side, I will ...
symmetry constraints on conformal correlators in momentu...
discuss how to construct a crossing symmetric basis of f...
consistent factorization in analogy with scattering ampl...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: May 15 (Wed.) 15:00-16:00
場所: D413
講演者: Kotaro Tamaoka (YITP)
タイトル: A Generalization of the Entanglement Entropy a...
概要:
We define a new information theoretic quantity called od...
which enables us to compute the entanglement wedge cross...
The entanglement wedge cross section has been introduced...
section of the entanglement wedge,
a natural generalization of the Ryu-Takayanagi surface.
First, we review basic ingredients in order to define th...
Then, we will explain some basic properties of the OEE.
Finally, we explicitly compute the generalized entropy f...
in two-dimensional holographic CFT and see agreement wit...
This talk is based on 1809.09109 (Phys. Rev. Lett. 122, ...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: April 11 (Thr.) 15:00-16:00
場所: Workshop room at CCS
講演者: Sato Yuki (Nagoya Univ.)
タイトル: How to "cool down" Ising model on 2d dynamical...
概要:
The Ising model on 2d dynamical triangulations was origi...
by Kazakov in 1986, which is a statistical system includ...
gravitational degrees of freedom. This system is known t...
the finite temperature and the continuum theory defined ...
critical point is the 2d gravity minimally coupled to fe...
We introduce an external parameter to the system, aiming...
observing the quantum critical behavior. Tuning the para...
certain value the critical temperature reaches absolute ...
resulting continuum theory at the zero temperature is NO...
minimally coupled to fermions. As it turns out, physics ...
zero-temperature may differ depending on the "cool down ...
The talk will be based on the work with Tomo Tanaka (Phy...
(2018) no.2, 026026) and the work in progress with Jan A...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
終了行:
*2019年 [#le173fee]
***[[Seminar]] [#b85254f3]
日時: February 21 (Fri.) 15:00-16:00
場所: Meeting room C at CCS
講演者: Christopher Sachrajda (Southampton)
タイトル: K → ππ decays from lattice QCD
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
「修士論文内部審査」
日時: January 21 (Tue.) 15:00-16:30
場所: Meeting room A at CCS
Hiroyuki Adachi "The Berezin-Toeplitz quantization for t...
Kaishu Saitou "弦理論のドジッター真空について"
Toru Hayama "標準模型有効理論におけるミューオン・電子転...
日時: December 24 (Tue.) 15:00-16:00
場所: Workshop room at CCS
講演者: Tamiaki Yoneya (JPS)
タイトル: Covariantized Matrix Theory
概要:TBA
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: August 27 (Tue.) 15:00-16:00
場所: Meeting room A at CCS
講演者: Kazuki Hasebe (National Institute of Technology,...
タイトル: 代数の拡張に関連した高次元非可換幾何とランダウ...
概要:
数の体系は、実数、複素数から始まり、四元数、八元数、クリ...
この代数の拡張と高次元の非可換幾何球面、非可換双曲体の密...
特にランダウ模型(磁場中の荷電粒子の模型)に基づいて、高...
高次元の量子ホール効果(トポロジカル絶縁体)、南部幾何も...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: July 16 (Tue.) 14:00-15:00
場所: D413
講演者: Yoshio Kikukawa (Univ. of Tokyo)
タイトル: Gauge-invariant path integral measure for the ...
概要:
We consider the lattice formulation of SO(10) chiral gau...
left-handed Weyl fermions in the sixteen dimensional spi...
(16) within the framework of the Overlap fermion/the Gin...
relation. We define a manifestly gauge-invariant path-in...
the left-handed Weyl field using all the components of t...
the right-handed part of which is just saturated complet...
suitable product of the SO(10)-invariant 't Hooft vertic...
right-handed field.
We also discuss the relations of our formulation to other
approaches/proposals to decouple the species-doubling/mi...
freedom. Those include Eichten-Preskill model, Ginsparg-...
fermion model, Domain wall fermion model with the bounda...
term, 4D Topological Insulator/Superconductor with gappe...
and the recent studies on the PMS phase/"Mass without sy...
We clarify the similarity and the difference in technica...
that our proposal is a well-defined and unified testing ...
basic question.
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: July 10 (Wed.) 14:00-15:00
場所: D413
講演者: Yoshio Kikukawa (Univ. of Tokyo)
タイトル: Why is the mission imposible? — Decoupl...
概要:
It is known that the four- and two-dimensional abelian c...
theories of an anomaly free set of Weyl fermions can be ...
lattice preserving the exact gauge invariance. However, ...
fermion approach with Ginsparg-Wilson fermions, it was a...
al. that the mirror fermions do not decouple : in the 34...
Dirac- and Majorana-Yukawa couplings to XY-spin field, t...
function of the (external) gauge field in the mirror sec...
singular non-local behavior in the PMS phase. We re-exam...
seems a "Mission: Impossible" in the 345 model.
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: July 3 (Wed.) 15:00-16:00
場所: Workshop room at CCS
講演者: Masaki Honda (Waseda Univ.)
タイトル: 行列模型に基づく背景磁場付き非可換トーラス上の...
概要:
行列模型は超弦理論の非摂動的な定式化の候補の1つとして注...
本講演では、行列模型の1つであるIKKT模型に基づき、背景磁...
初めに、IKKT模型と、この模型における非可換トーラスの実現...
次に、比較のために、通常のトーラス上に背景磁場を入れた場...
続いて非可換トーラス上のDirac作用素およびゲージ場を導入...
最後に、ゼロモード方程式をどのように解いたかを紹介し、そ...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: June 28 (Fri.) 14:00-15:00
場所: Workshop room at CCS
講演者: Oliver Baer (Humboldt University Berlin)
タイトル: Nucleon-pion-state contamination in lattice ca...
概要:
The nucleon-pion-state contributions to QCD two- and thr...
used in lattice calculations of nucleon form factors are...
perturbation theory. For physically small quark masses t...
states are expected to dominate the excited-state contam...
euclidean time separations. To leading order in chiral p...
the results depend on two experimentally well-known low-...
only and the nucleon-pion-state contribution can be reli...
Most severe is the nucleon-pion-state contribution to th...
scalar form factor $\tilde{G}_P(Q^2)$, which shows a rat...
dependence of $Q^2$ and leads to a 20%-40% underestimati...
momentum transfer. This underestimation is also responsi...
violation of the generalized Goldberger-Treiman relation...
form factors. The prospects for using the ChPT results t...
remove the nucleon-pion-state contributions from the lat...
discussed.
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: June 27 (Thu.) 15:00-16:00
場所: Meeting room A at CCS
講演者: Toshifumi Noumi (Kobe Univ.)
タイトル: Conformal correlators in momentum space and co...
概要:
Recent studies in cosmology have shown that analytic pro...
together with approximate conformal symmetry realized at...
probing new physics at the inflation scale. These cosmol...
boosted research activities on conformal correlators in ...
introducing motivations from the cosmology side, I will ...
symmetry constraints on conformal correlators in momentu...
discuss how to construct a crossing symmetric basis of f...
consistent factorization in analogy with scattering ampl...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: May 15 (Wed.) 15:00-16:00
場所: D413
講演者: Kotaro Tamaoka (YITP)
タイトル: A Generalization of the Entanglement Entropy a...
概要:
We define a new information theoretic quantity called od...
which enables us to compute the entanglement wedge cross...
The entanglement wedge cross section has been introduced...
section of the entanglement wedge,
a natural generalization of the Ryu-Takayanagi surface.
First, we review basic ingredients in order to define th...
Then, we will explain some basic properties of the OEE.
Finally, we explicitly compute the generalized entropy f...
in two-dimensional holographic CFT and see agreement wit...
This talk is based on 1809.09109 (Phys. Rev. Lett. 122, ...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
日時: April 11 (Thr.) 15:00-16:00
場所: Workshop room at CCS
講演者: Sato Yuki (Nagoya Univ.)
タイトル: How to "cool down" Ising model on 2d dynamical...
概要:
The Ising model on 2d dynamical triangulations was origi...
by Kazakov in 1986, which is a statistical system includ...
gravitational degrees of freedom. This system is known t...
the finite temperature and the continuum theory defined ...
critical point is the 2d gravity minimally coupled to fe...
We introduce an external parameter to the system, aiming...
observing the quantum critical behavior. Tuning the para...
certain value the critical temperature reaches absolute ...
resulting continuum theory at the zero temperature is NO...
minimally coupled to fermions. As it turns out, physics ...
zero-temperature may differ depending on the "cool down ...
The talk will be based on the work with Tomo Tanaka (Phy...
(2018) no.2, 026026) and the work in progress with Jan A...
-[http://www-het.ph.tsukuba.ac.jp/Seminar/tsukuba-only/20...
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