Dirac quasinormal modes of two-dimensional charged Dilatonic Black Holes

We study charged fermionic perturbations in the background of two-dimensional charged Dilatonic black holes, and we present the exact Dirac quasinormal modes. Also, we study the stability of these black holes under charged fermionic perturbations.Comment: version accepted for publication in EPJC. arXiv admin note: substantial text overlap with arXiv:1404.5371, arXiv:1404.602

Social sector expenditures and rainy-day funds

Gonzalez and Paqueo examine the effects of budget stabilization funds--often called rainy-day funds--on the volatility of social spending and, for contrast, on nonsocial sector spending. They analyze the rainy-day funds of U.S. states. The authors find that rainy-day funds are ineffective in reducing the volatility of nonsocial sector expenditures but are effective in reducing the volatility of social sector expenditures. The authors also find that states that have stringent deposit and withdrawal rules have higher rainy-day fund balances, and thus are more effective in reducing the volatility of social sector expenditures. Finally, for long-term effectiveness, stabilization funds depend obviously on sustained economic growth.Urban Governance and Management,Environmental Economics&Policies,Regional Governance,Infrastructure Finance,Public Sector Economics&Finance,National Governance,Environmental Economics&Policies,Infrastructure Finance,Infrastructure Finance,Public Sector Economics&Finance

Bargaining for a new fiscal pact in Mexico

The authors consider the malaise with the present set-up of fiscal federalism in Mexico from the points of view of the main players-the federal government, the states, the municipalities, and the citizen voters-in order to identify the areas of potential common interest as well as the direct conflicts. There is a zero-sum game on some issues, like the size of aggregate transfers, but not on others, likeraising tax collection and improving accountability for service delivery. The authors consider bargain packages that combine mutually beneficial changes and thus might obtain broad enough political support. They analyze the bargaining packages in two main tracks-one concerning tax assignments, revenue sharing, and tax administration, and another concerning the conjunction of earmarked transfers and accountability for service provision. An important result is that almost all states would find it fiscally attractive to impose a sales tax that replaced part of the federal value-added tax (VAT), even if the federal government reduced revenue sharing enough to cover half the cost of reducing the VAT rate to make room for the state tax.National Governance,Urban Governance and Management,Public Sector Economics&Finance,Banks&Banking Reform,Regional Governance,National Governance,Public Sector Economics&Finance,Banks&Banking Reform,Municipal Financial Management,Regional Governance

Economic analysis of health care utilization and perceived illness ; ethnicity and other factors

Paqueo and Gonzalez look at the determinants of health-seeking behavior of the Mexican population and within this context focus on the effect of ethnicity. They address the following questions: To what extent are the indigenous people at a disadvantage health care-wise and in what particular health services are they disadvantaged? Is the health care gap due to indigenous cultures by itself as opposed to the impact of socioeconomic differences? What policy instruments can be used to reduce the gap? The authors find that contrary to expectations, the indigenouspeople in Mexico tend to have a positive behavior toward modern preventive care compared with the nonindigenous population, holding socioeconomic factors constant. Apparently, there is no cultural barrier in regard to these services. But ethnicity remains negatively associated with the use of inpatient hospital care and medical and dental consultations. Insurance has a significant and positive effect on health care use. Therefore, it appears to be an effective instrument for addressing the health care disadvantages faced by the indigenous population in regard to inpatient care and the use of outpatient services of doctors, nurses, and dentists.Early Child and Children's Health,Health Systems Development&Reform,Health Monitoring&Evaluation,Public Health Promotion,Health Economics&Finance,Health Monitoring&Evaluation,Health Systems Development&Reform,Health Economics&Finance,Housing&Human Habitats,Gender and Health

Non-renormalization of two and three Point Correlators of N=4 SYM in N=1 Superspace

Certain two and three point functions of gauge invariant primary operators of ${\cal N}=4$ SYM are computed in ${\cal N}=1$ superspace keeping all the $\th$-components. This allows one to read off many component descendent correlators. Our results show the only possible $g^2_{YM}$ corrections to the free field correlators are contact terms. Therefore they vanish for operators at separate points, verifying the known non-renormalization theorems. This also implies the results are consistent with ${\cal N}=4$ supersymmetry even though the Lagrangian we use has only ${\cal N}=1$ manifest supersymmetry. We repeat some of the calculations using supersymmetric Landau gauge and obtain, as expected, the same results as those of supersymmetric Feynman gauge.Comment: 10 pages, 20 eps figures, references adde