Transport coefficients of black MQGP $$M3$$ M 3 -branes

Dhuria, Mansi; Misra, Aalok

doi:10.1140/epjc/s10052-014-3207-6

Cited by 17 publications

(52 citation statements)

References 48 publications

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“…The finite part (boundary S GHY ) of the action turns out to be independent of this cutoff / θ 6 and the specific heat C v > 0, thus showing stability of M-theory uplift. Using the UV finite EH-action, the D = 11 SUGRA EOMs/Bianchi identity, as shown in 7 , are satisfied near the θ 1,2 = 0, π-branches in the MQGP limit. By solving for the equation of motion for a square-integrable gauge field corresponding to the U (1) sub-group of the U (N f ) group corresponding to N f flavor D7-branes embedded via the Ouyang embedding with an imaginary embedding parameter μ after evaluating the corresponding DBI action and imposing a Dirichlet boundary condition for the U (1) gauge field at a small-r cut-off, the Hawking-Page phase transition temperature from an asymptotic AdS to an asymptotic AdS-BH background temperature/QCD deconfinement temperature T c (much in the spirit of 10 ), will be been shown in a forthcoming paper 17 , to be given by the following .…”

Section: ) As Well As Its M-theory Uplift Ofmentioning

confidence: 98%

“…In the MQGP limit taking g s = 0.8 the above yields T c = 175M eV , for μ = 13.7i, N f = 3. 6 , the DBI Action was worked out in 7 . Defining E x1 (q, u) = E 0 (q)E q (u)/E q (u = 0), the spectral functions in zero-momentum limit are given as:…”

Section: ) As Well As Its M-theory Uplift Ofmentioning

confidence: 99%

“…Based on the the spin of different metric perturbations under this group, the same can be classified into groups as follows: (1) vector modes -given by considering only h tx2 and h x1x2 components to be non-zero; (2) tensor modes -given by h x2x3 = 0 with all other h μν = 0 2 ; (3) scalar modes -h x1x1 = h x2x2 = h x3x3 = h tt = 0, h x1t = 0. The first two were studies in 7 . The last has been studied in 17 : In the context of scalar metric perturbations, there are three gauge transformations that preserve h μu = 0, for the black M 3-brane metric having integrated out the M 6 in the AdS 5 × M 6 in the MQGP limit of 6 , and along with metric perturbations,H …”

Section: Two-point Functions and Transport Coefficientsmentioning

confidence: 99%

“…The discussion about possibility of getting a local isometry along a third direction and the large base of fibration is given in 6 . We looked at the five SU (3) structure torsion classes W 1,2,3,4,5 11 of the resolved warped deformed conifold in 7 . The resolved warped deformed conifold can be written in the form of the Papadopoulos-Tseytlin ansatz 12 in the string frame:…”

Section: Introduction and Setupmentioning

confidence: 99%

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Resolved warped deformed conifolds and large-N thermal QCD via black M3-branes

Misra¹

2017

The Fourteenth Marcel Grossmann Meeting

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We discuss thermodynamical stability of the type IIB background of 3 and its local Mtheory uplift, evaluation of electrical conductivity, charge susceptibility, diffusion constant, the Einstein relation relating the three, obtaining the QCD deconfinement temperature compatible with lattice data and speed of sound, in the 'MQGP' limit of 6 involving gs < ∼ 1, which we expect will shed light on strongly coupled thermal systems (such as the sQGP).

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Section: ) As Well As Its M-theory Uplift Ofmentioning

confidence: 98%

Section: ) As Well As Its M-theory Uplift Ofmentioning

confidence: 99%

Section: Two-point Functions and Transport Coefficientsmentioning

confidence: 99%

Section: Introduction and Setupmentioning

confidence: 99%

See 2 more Smart Citations

Resolved warped deformed conifolds and large-N thermal QCD via black M3-branes

Misra¹

2017

The Fourteenth Marcel Grossmann Meeting

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“…In view of this one could turn the indication of a large SUSY scale as a possible resolution of the EDM problem of supersymmetric models. In fact it has been suggested recently [10,11,12,13,14], that one can go further and utilize the current and future improved data on the EDM limits to probe mass scales far beyond those that may be accessible at colliders. We also note in passing that a large SUSY scale also helps suppress flavor changing neutral currents (FCNC) in supersymmetric models and helps stabilize the proton against rapid decay from baryon and lepton number violating dimension five operators in grand unified theories.…”

Section: Introductionmentioning

confidence: 99%

Neutron electric dipole moment and probe of PeV scale physics

2015

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The experimental limit on the neutron electric dipole moment is used as a possible probe of new physics beyond the standard model. Within MSSM we use the current experimental limit on the neutron EDM and possible future improvement as a probe of high scale SUSY. Quantitative analyses show that scalar masses as large as a PeV and larger could be probed in improved experiment far above the scales accessible at future colliders. We also discuss the neutron EDM as a probe of new physics models beyond MSSM. Specifically we consider an MSSM extension with a particle content including a vectorlike multiplet. Such an extension brings in new sources of charge conjugation and parity (CP) violation beyond those in MSSM. These CP phases contribute to the EDM of the quarks and to the neutron EDM. These contributions are analyzed in this work where we include the supersymmetric loop diagrams involving the neutralinos, charginos, the gluino, squark and mirror squark exchange diagrams at the one loop level. We also take into account the contributions from the W , Z, quark and mirror quark exchanges arising from the mixings of the vectorlike generation with the three generations. It is shown that the experimental limit on the neutron EDM can be used to probe such new physics models. In the future one expects the neutron EDM to improve an order of magnitude or more allowing one to extend the probe of high scale SUSY and of new physics models. For the MSSM the probe of high scales could go up to and beyond PeV scale masses.

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Pole-skipping and chaos in hot$$\mathcal{M}{\text{QCD}}$$

Yadav,

Kushwah,

Misra

2024

J. High Energ. Phys.

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We address the question of whether thermal QCD at high temperature is chaotic from the $$\mathcal{M}$$ theory dual of QCD-like theories at intermediate coupling as constructed in [1]. The equations of motion of the gauge-invariant combination Zs(r) of scalar metric perturbations is shown to possess an irregular singular point at the horizon radius rh. Very interestingly, at a specific value of the imaginary frequency and momentum used to read off the analogs of the “Lyapunov exponent” λL and “butterfly velocity” vb not only does rh become a regular singular point, but truncating the incoming mode solution of Zs(r) as a power series around rh, yields a “missing pole”, i.e., Cn,n+1 = 0, det M(n) = 0, n ∈ $${\mathbb{Z}}^{+}$$ is satisfied for a single n ≥ 3 depending on the values of the string coupling gs, number of (fractional) D3 branes (M)N and flavor D7-branes Nf in the parent type IIB set [2], e.g., for the QCD(EW-scale)-inspired N = 100, M = Nf = 3, gs = 0.1, one finds a missing pole at n = 3. For integral n > 3, truncating Zs(r) at $$\mathcal{O}\left({\left(r-{r}_{h}\right)}^{n}\right)$$, yields Cn,n+1 = 0 at order n, ∀n ≥ 3. Incredibly, (assuming preservation of isotropy in $${\mathbb{R}}^{3}$$ even with the inclusion of higher derivative corrections) the aforementioned gauge-invariant combination of scalar metric perturbations receives no $$\mathcal{O}\left({R}^{4}\right)$$ corrections. Hence, (the aforementioned analogs of) λL, vb are unrenormalized up to $$\mathcal{O}\left({R}^{4}\right)$$ in $$\mathcal{M}$$ theory.

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Transport coefficients of black MQGP $$M3$$ M 3 -branes

Cited by 17 publications

References 48 publications

Resolved warped deformed conifolds and large-N thermal QCD via black M3-branes

Resolved warped deformed conifolds and large-N thermal QCD via black M3-branes

Neutron electric dipole moment and probe of PeV scale physics

Pole-skipping and chaos in hot$$\mathcal{M}{\text{QCD}}$$

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