## Z~i[i2016Nx)

: 2017N131() 15:00 (50 x 2)
ꏊ : E101iwE 9uj
: Renormalization Group Equation and the Higgs Physics
u :EcO ()

TvFLHC ɂāC125 GeV Higgs q𐶐fߒƂẮC ˃r[zqgluon ǂfusion NvZXłdvłD ̍ہCQCD ɂt˕␳ǂ̒x̑傫ɂȂ̂CLHC ݂̍ۂɂ͑傫Ȋ֐SłD QCD ␳́CԂ𔽓]čl΁CHiggs qQgluon ɕ󂷂ꍇ decay width ɑ΂QCD ␳Ɠ̂ɂȂD
{uł́CHiggs qgluonic decay width ɑ΂QCD ␳C肱݌Qp ]@D肱݌Q́CۓWJ̊eŐlIɑ傫ȑΐꍇC ΐ ̑Sɂđグ邱Ƃ\ɂD Higgs qgluonic decay ̏ꍇClIɑ傫ȑΐƂĂ$$\log m_H$$, $$\log M_t$$ ̂QނD $$m_H$$, $$M_t$$ ͂ꂼHiggs qȂтtop quark ̎ʂłD 2 ނ̑ΐ𕪗Cۓ̑Sɂ킽đグ邱ƂɂC x̍decay width ̌𓱂

: 2016N1214() 16:30
ꏊ : F204iwF 3uj
: Elliptic q-KZ equation and the Weight Functions
u :ώ (Cm)

TvFIt is know that the representation theory of the elliptic quantum group $$U_{q,p}(\mathfrak{g})$$ yields a systematic construction of the integral solutions to the face type (dynamical) elliptic q-KZ equation. There the vertex operators and the elliptic half currents (screening operators) play important roles. On the other hand there are a lot of significant works by Felder, Tarasov and Varchenko [FTV] on the same solutions for the case $$\mathfrak{g}=\widehat{\mathfrak{sl}}_2$$. However there are no systematic studies on a comparison between the two. In this talk we address this issue. We will present a simple rule of deriving the weight functions, whose transition property expressed by the elliptic dynamical R matrix is manifest. As examples, we present the expressions of the weight functions associated with the representations of $$U_{q,p}(\widehat{\mathfrak{sl}}_2)$$ of level k ($$\in \mathbb{Z}_{>0}$$) as well as of $$U_{q,p}(\widehat{\mathfrak{sl}}_N)$$ of level 1. The $$U_{q,p}(\widehat{\mathfrak{sl}}_2)$$ case coincides with the one obtained by FTV. The higher rank result is new. If time allows we will make some comments on a relation to the stable envelopes by Okounkov as well as on a connection with the conjectural Nekrasov partition function of the 6-dim. SUSY gauge theory.

: 2016N1129() 13:00
ꏊ : F204iwF 3uj
: Entanglement entropy on the fuzzy sphere
u :yl (É)

TvFWe study entanglement entropy in a scalar field theory on the fuzzy sphere, which is realized by a matrix model. In the free case, we confirm that entanglement entropy is proportional to the square of the boundary area of a focused region. We argue that this behavior of entanglement entropy can be understood by the fact that the theory is regularized by matrices. In the interacting case, we observe a transition from a generalized volume law, which is obtained by integrating the square of area law, to the square of area law.

: 2016N1122() 17:30
ꏊ : F204iwF 3uj
: On the superconformal index of Argyres-Douglas theories
u : ()

TvFArgyres-Douglas (AD) theories are strongly coupled 4d N=2 superconformal field theories. Since there is no weak coupling limit of the theories, most of their physical properties have been unclear for twenty years. In this seminar, I will talk about our conjectural expression for the superconformal index of AD theories given in terms of 2d q-deformed Yang-Mills theory. Our formula is motivated by the index version of the AGT relation, and is perfectly consistent with the Higgs branch chiral rings, 2d chiral algebras, RG-flows, and the 3d reduction.

: 2016N1115() 16:30
ꏊ : F204iwF 3uj
: 5-brane webs and 6d SCFT
u :єM (Cw)

TvFOne intriguing characteristic of 6d SCFTs is that a single 6d SCFT may have several equivalent descriptions depending on deformations from the 6d SCFT. One description is given on a tensor branch of the theory. The theory becomes a 6d gauge theory with tensor multiplets. More interestingly, a circle compactification of a 6d SCFT may give rise to a 5d gauge theory description which will contain the same BPS spectrum as that of the 6d SCFT. Recently, a new class of the several equivalent descriptions was proposed for the 6d D-type minimal conformal matter theory. In this talk, we focus on the (D_5, D_5) minimal conformal matter theory and show that three different looking BPS partition functions, namely the elliptic genus of the 6d Sp(1) gauge theory with 10 flavors and a tensor multiplet, the Nekrasov partition function of the 5d Sp(2) gauge theory with 10 flavors, and the Nekrasov partition function of the 5d SU(3) gauge theory with 10 flavors, are indeed all equal to each other under specific maps among the parameters. Type IIB 5-brane web diagrams play an essential role to compute the SU(3) Nekrasov partition function as well as establishing the maps.

: 2016N104() 16:30
ꏊ : F204iEwF 3uj
: Testing neutrino mass generation mechanisms via flavor physics
u :R OW (xRw)

TvFj[gmʂ𐶐V͌^݂͑A Iɂǂ̂EEEɑIʂĂ͏dvȖłB IȑIʂ̂߂ɂ́A ͌^𕪗ނĂƂLłB {uł́AvgƐVXJ[Ƃ V쑊ݍpɒڂނsȂA }ij[gmƃfBbNj[gm ꂼ̏ꍇɂĂ̕ތʂЉB 쑊ݍps(t[o[\)݂̂ɒڂ邱Ƃ XJ[ZN^[̏ڍׂ؂藣ƂłA ܂AVq̔Ȃꍇł t[o[ɊւpIʂ҂łB ہA^E lepton flavor violating~(LFV) 󓙂ɂ ͌^O[v̑Iʂ\ł邱ƂB ܂AqbOXqLFV󂪊ϑꂽꍇɂ́A }ij[gmʂ̃VvȖ͌^͊pA fBbNj[gmʂ̂̖͌^ pꂸɎc邱ƂB

: 2016N84() 11:00
ꏊ : F212iwF 5uj
: Pseudo-Dilaton
u : ی (w_)

TvFWe start with a new discovery of an expanding Universe made toward the end of the last century, rediscovering the cosmological constant, which had been a taboo since Hubble's days. But why is that so small?

$$\Lambda_{\rm obs} \sim 10^{-120} M_{\rm P}^4 \ll \Lambda_{\rm th} \sim M_{\rm P}^4?$$

requiring the theoretical parameters unnaturally fine-tuned. Probably the easiest way is to appeal to the Scalar-Tensor Theory STT, one of the immediate extension of Einstein's GR, with introducing a constant $$\Lambda_{\rm th}$$ in the Jordan conformal frame (CF), thus entailing $$\rho_{\sigma}$$ with $$\sigma$$ the scalar field in the Einstein CF interpreted as the content of Dark Energy, falling off naturally like $$\sim t_{*}^{-2}$$ with $$t_{*0} \sim 10^{60}$$ for the present age of the Univ in units of the Planck time. On the other hand, Univ is observed to expand with time in units of the inverse of the mass $$m$$ of the microscopic particles. A study of STT, in close collaboration with particle physics, reveals $$m$$ conveniently defined in JF turns out to be time-dependent, in conflict with Own-Unit Insensitivity Principle, implying we have no way of detecting any variation of the units themselves. Avoiding this fundamental flaw might be provided by assuming the m generated spontaneously with a massless $$\sigma$$ as a Nambu-Goldstone boson called a Dilaton, associated with scale invariance. It seems highly non-trivial still fascinated to explore the nature of this type of hidden complication, together with going further to develop the realistic destination toward the Pseudo-Dilaton which is now massive. For this purpose we are going to formulate the whole development in terms of a single continuous dimensionality $$D$$ off the physical value 4, normally to describe the quantum-field theoretical divergence, hence under the name of dimensional regularization DR.

: 2016N712() 16:30
ꏊ : F204iwF 3uj
: A new class of black hole microstate geometries
u : dX (swbw)

TvFThe near-horizon geometry of supersymmetric black holes is the extremal BTZ black hole geometry with an infinitely deep throat. Therefore, any geometries that represent microstates of such black holes must also have a very long throat that caps off smooth. We found a new class of microstate geometries which does not only have such a deep capped throat but also other important ingredients, such as having a single non-trivial cycle, known CFT dual, and vanishing angular momenta.

: 2016N621() 16:30
ꏊ : F212iwF 5uj
: Massive higher spin fields in curved spacetime and necessity of non-minimal couplings
u : R{ (sw)

TvFstring_ł̗͌NԂƂmassive higher spin̏Ԃ݂B̗NԂɑ΂ď̗_ILq^邩ǂ͒Nɂ킽鋻[ƂȂĂBŁEEA{uł͂܂A悭ׁEEĂmassive spin 2̏ɂāAȂconsistentȋLq\ł邱ƂfreeȏꍇɎBɁAspin 2ŊJ@_pāAȂɂmassive spin 3̗̏_ɂċc_B
@ɁAmassive gravity̗_ÓT܂Ő̂qmassive spin 2̗̏_Ɋ܂܂Ă邱ƂB

: 2016N524() 16:30
ꏊ : F204iwF 3uj
: Models of LHC Diphoton Excesses Valid up to the Planck scale
u : 얼 (sw)

TvFN12ɔ\ꂽLHCrun2̌ʁEɂāADiphotonsignalɕW͌^̒߂ꂽB W͌^𒴂𖾂炩ɂ邽߂ɂǍʂV̊^Ƃčl@͈̂ӖB ̂悤Ȍ͂܂łɐEĂ邪A ̒łvNXP[܂ňSȃfl@(I)Ă̂͏dvłB ȂȂÂ悤ȃfstring_Ȃǂ̃vNXP[̗L_ƒڌȂƂ\łB X͕W͌^̍ŏ̊gɂāALHČʂvNXP[܂ňSȃfnIɒׂB ʂƂď̌ꂽfł𓯎ɖȂƂB

qj--fqZ~i[

: 2016N510() 2̃Z~i[܂B
ꏊ : E211(wE 10u)

: 15:0016:00
u : en En(swj
: Two-neutron correlations in the ground and excited states of 6He

Tv : Recent development of RI beam experiments reveals us exotic properties in neutron-rich nuclei which we have never faced in stable nuclei. An example of such exotic properties is a neutron halo structure observed in 11Be, 6He, 11Li and so on. A neutron halo nucleus is well described as a core nucleus with a normal nuclear density surrounded by a dilute neutron layer. For two-neutron halo nuclei such as 6He and 11Li, many authors have studied their exotic structures and binding mechanisms using core+n+n three-body models. From the results of the three-body calculations, the importance of a correlation between two halo neutrons in their binding mechanisms is suggested. This correlation between halo neutrons is characterized as the spatially-localized n-n pair, the so-called dineutron, and has attracted much attention from both theoretical and experimental sides.

In this talk, we discuss the dineutron correlations in the ground and excited states of two-neutron halo nuclei by using two kinds of reactions. For the excited states, we consider the nuclear breakup reaction of 6He. We investigate the decay mode of the 2+ resonant state, which is populated by the breakup reaction by 12C at 240 MeV/nucleon, and discuss the role of two-neutron correlation in decay from the 2+ resonance. For the ground state, we investigate the neutron knockout reaction of 6He. In quasi-free knockout reactions, the knocked-out neutron is free from final-state interactions, and it is expected that we could extract the ground-state information from the observables. We discuss the possibility of direct measurement of the dineutron correlation in the knockout reaction.

: 16:0017:00
u : Oꎁiswj
: ԈˑϏꗝ_ɊÂUWc^̌

Tv : qj̑UWc^̔I_\z邱Ƃ́Aqj̒N̉ ƂȂĂB Ϗꗝ_ɊÂUWc^̔I_ƂāAfMIԈˑ Hartre-Fock@ ̌ʂgfMIԈˑHartree-Fock-Bogoliubov@ ĂA ̕s萫Ȃǂ́EEEE邱ƂmĂB X́A]̕@̖EVȕ@łufMIȖ WcW(ASCC)@vƂ I_ɊÂsĂB̒kbł́AASCC@̘gg݂ɂ ďЉƂƂɁA όۂόJڌۂւ̉EpȂǂɂďЉB

Z~i[Ɋւ邨₢킹 toota_AT_sci.osaka-cu.ac.jp ܂łA낵肢܂B i_AT_@ŒuĂBj

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