One-Loop Matching for Parton Distributions: Non-Singlet Case

We derive one-loop matching condition for non-singlet quark distributions in transverse-momentum cut-off scheme, including unpolarized, helicity and transversity distributions. The matching is between the quasi-distribution defined by static correlation at finite nucleon momentum and the light-cone distribution measurable in experiments. The result is useful for extracting the latter from the former in a lattice QCD calculation.Comment: 10 pages, 1 figur

The Role of Chaos in One-Dimensional Heat Conductivity

We investigate the heat conduction in a quasi 1-D gas model with various degree of chaos. Our calculations indicate that the heat conductivity $\kappa$ is independent of system size when the chaos of the channel is strong enough. The different diffusion behaviors for the cases of chaotic and non-chaotic channels are also studied. The numerical results of divergent exponent $\alpha$ of heat conduction and diffusion exponent $\beta$ are in consistent with the formula $\alpha=2-2/\beta$. We explore the temperature profiles numerically and analytically, which show that the temperature jump is primarily attributed to superdiffusion for both non-chaotic and chaotic cases, and for the latter case of superdiffusion the finite-size affects the value of $\beta$ remarkably.Comment: 6 pages, 7 figure

Increasing and decreasing entanglement characteristics for continuous variables by a local photon subtraction

We investigate how the entanglement characteristics of a non-Gaussian entangled state are increased or decreased by a local photon subtraction operation. The non-Gaussian entangled state is generated by injecting a single-mode non-Gaussian state and a vacuum state into a 50:50 beam splitter. We consider a photon-added coherent state and an odd coherent state as a single-mode non-Gaussian state. In the regime of small amplitude, we show that the performance of quantum teleportation and the second-order Einstein-Podolsky- Rosen-type correlation can both be enhanced, whereas the degree of entanglement decreases, for the output state when a local photon subtraction operation is applied to the non-Gaussian entangled state. The counterintuitive effect is more prominent in the limit of nearly zero amplitude.Comment: Published version, 7 pages, 3 figure

A Study On The Determinants Of Business Stability In Credit Card Firms: Evidence From Korea

This study empirically analyses several factors that affect financial stability such as the profitability of Korean credit card firms, capital adequacy, loan soundness, and liquidity. In particular, internal and external factors found in previous studies were applied to the analysis in order to investigate whether or not those factors had a significant effect on the business stability of Korean credit card firms. The major research findings are as follows. First, the determinant factors for profitability were found to be the degree of enlargement, foreign credibility, and the level of risk management. Second, the determinant factors for capital adequacy were found to be the degree of enlargement, diversification, foreign credibility, the level of management, and the interest rate. Third, the determinant factors for loan soundness were found to be the degree of enlargement and foreign credibility. Lastly, the determinant factors for liquidity were found to be the degree of diversification, foreign credibility, the level of risk management, the degree of competition, economic conditions, and the interest rate. In conclusion, with the recent reduction in the card affiliates’ fees, the leverage regulation, and the credit card debt suppression policy, financial authorities will likely refer to this study as they carefully examine the various influences on the business stability of domestic credit card firms and come up with relevant countermeasures for the continuous growth of those firms

Pro-Cyclicality Of Small And Medium Enterprise (Sme) Loans According To Financing Type Based On Purpose: Evidence From Korean Banks

An empirical analysis is conducted on the pro-cyclicality of SME loans based on purpose, which has not been examined in previous research. In this study, the purpose of SME loans is divided into four types: total SME loans, long-term loans for investment in equipment, long-term loans for R&D investment, and short-term loans for working capital. The aim of the study is to determine whether pro-cyclicality exists in the four types of loans. In particular, it is expected that because of the high-risk weight considered in estimating credit risk, the number of long-term loans may have decreased in the economic distress experienced since 2006, when the Basel II accord came into effect. At that time, most banks adopted the advanced internal rating approach to calculate borrowers' credit risks. This study is based on the assumption that the risk weight of long-term loans is different from that of short-term loans. The GMM model is adopted to test the pro-cyclicality of long-term and short-term loans. The test results showed signifcant pro-cyclicality in long-term loans for investment in equipment and R&D. Second, there was no pro-cyclicality in short-term loans for purchasing raw materials. Third, the fnancial characteristics affecting the lending behaviour of banks were indicators of proftability and fnancial soundness of credit. Based on the results, effective policies are recommended, such as credit enhancement through credit guarantees, in order to alleviate the effects of pro-cyclicality on long-term loan