Singular Perturbation Theory for the Thermodynamic Properties of Holographic QCD

Megías, Eugenio; Valle, Manuel

doi:10.1002/prop.201800035

Cited by 4 publications

(4 citation statements)

References 48 publications

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“…The ansatz for the background metric and fields is chosen as follows in Fefferman-Graham coordinates [43,44],…”

Section: Background Solutionmentioning

confidence: 99%

Climate Change and Hydropower Development in the Eastern Himalaya: Emerging Conflicts in the Upper Tista Catchment of Sikkim, India

Rai¹,

Khawas²

2021

Preprint

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This paper assess the controversies and tensions being created by the target of ambitious hydropower development plans in the name of climate mitigating energy in the Upper Tista River Basin of Sikkim (India) which is a part of Eastern Himalayan region. However, in the face of climate change, hydropower projects have become a contested developmental paradigm in the Easter Himalayan region of Sikkim. The paper highlights potential issues and conflicts between climate mitigation approaches through hydropower projects and anti hydropower forces of local people. The paper critically examines pre and post hydropower development conflicts and cooperation along Upper Tista river basin. In fact, the region has witnessed that the Hydro Power Project have been undermining environmental and social security over the past years. The study also analyse the different roles of dam affected people, local politicians, NGOs and dam developers in advocating and protesting of the hydropower dam projects in the region. Using an environmental security framework the study critically analyse the environmental risks and impacts being aggravated by combined forces of climate change and hydropower development in upper Tista catchment of Sikkim Himalaya (India).

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“…The ansatz for the background metric and fields is chosen as follows in Fefferman-Graham coordinates [43,44],…”

Section: Background Solutionmentioning

confidence: 99%

Climate Change and Hydropower Development in the Eastern Himalaya: Emerging Conflicts in the Upper Tista Catchment of Sikkim, India

Rai¹,

Khawas²

2021

Preprint

View full text Add to dashboard Cite

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“…In either case, we cannot exclude that power corrections could become relevant after considering the effects of RG flows connecting two fixed points, a study already outlined in Ref. [15], or in a sophisticated version of the model.…”

Section: Phenomenological Consequences For Qcdmentioning

confidence: 98%

“…This assumption requires the condition for integrability 2ρ 0 ∂s/∂ρ 0 = ∂ O /∂T , which has been checked in Ref. [15] by using holographic renormalization techniques. Since there is no conserved charge, the Euler identity adopts the form w = ε − T s. Then, it follows that the first law of thermodynamics is…”

Section: First Law Of Thermodynamicsmentioning

confidence: 99%

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Thermodynamics of AdS₅ black holes: holographic QCD and Stückelberg model

Megías

2019

J. Phys.: Conf. Ser.

Self Cite

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We explore the thermodynamics of AdS5 black holes in two models: i) an improved holographic QCD model with a simple dilaton potential, and ii) the Stückelberg model in 5D. In the former case, by applying techniques of singular perturbation theory, we obtain a resummation of the naive expansion at high temperatures, providing a good fit to the lattice data for the trace anomaly. In the latter, we find a solution of the equations of motion by considering an expansion in the conformal dimension of the current associated to the gauge field.

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Anomalous conductivities in the holographic Stückelberg model

Rai

Megías

2023

J. High Energ. Phys.

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We have studied a massive U(1) gauge holographic model with pure gauge and mixed gauge-gravitational Chern-Simons terms. The full backreaction of the gauge field on the metric tensor has been considered in order to explore the vortical and energy transport sector. The background solution has been computed numerically. On this background, we have considered the fluctuation of the fields and evaluated the different correlators. We have found that all the correlators depend on the mass of the gauge field. Correlators such as the current-current one, 〈JxJx〉, which were completely absent in the massless case, in the presence of a finite gauge boson mass start picking up some finite value even at zero chemical potential. Similarly, the energy-current correlator, 〈T0xJx〉, which was also absent in the massless theory, has now a non-vanishing value but for finite values of the chemical potential. Our findings for the chiral vortical conductivity, σV, and the chiral magnetic/vortical conductivity of energy current, $$ {\sigma}_B^{\varepsilon }={\sigma}_V^{\varepsilon } $$ σ B ε = σ V ε , are completely new results. In addition to this, we have found that these anomalous transport coefficients depend linearly both on the pure Chern-Simon coupling, κ, and on the mixed gauge-gravity Chern-Simon coupling, λ. One of the results that we would like to highlight is that it’s not just κ that contributes to the σB but there is an additional contribution from λ as well unlike the previous studies.

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Singular Perturbation Theory for the Thermodynamic Properties of Holographic QCD

Cited by 4 publications

References 48 publications

Climate Change and Hydropower Development in the Eastern Himalaya: Emerging Conflicts in the Upper Tista Catchment of Sikkim, India

Climate Change and Hydropower Development in the Eastern Himalaya: Emerging Conflicts in the Upper Tista Catchment of Sikkim, India

Thermodynamics of AdS₅ black holes: holographic QCD and Stückelberg model

Anomalous conductivities in the holographic Stückelberg model

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Singular Perturbation Theory for the Thermodynamic Properties of Holographic QCD

Cited by 4 publications

References 48 publications

Climate Change and Hydropower Development in the Eastern Himalaya: Emerging Conflicts in the Upper Tista Catchment of Sikkim, India

Climate Change and Hydropower Development in the Eastern Himalaya: Emerging Conflicts in the Upper Tista Catchment of Sikkim, India

Thermodynamics of AdS5 black holes: holographic QCD and Stückelberg model

Anomalous conductivities in the holographic Stückelberg model

Contact Info

Product

Resources

About

Thermodynamics of AdS₅ black holes: holographic QCD and Stückelberg model