Reconsidering Chinese modesty: Hong Kong and mainland Chinese evaluative judgements of compliment responses

Compliments are usually intended to have a positive effect on interpersonal relations, yet for the outcome actually to be positive, both the compliment and the compliment response need to be handled appropriately. This paper focuses on different types of compliment responses, and explores Chinese people’s evaluative judgements of these different types. Gao and Ting-Toomey (1998) argue that modesty is an important component of Chinese politeness, and that to blatantly accept a compliment is considered impolite. Several studies (e.g. Chen 1993, Yuan 1996 and Loh 1993) have indeed found that compliments are rejected more frequently in Chinese than in English, yet other evidence suggests that acceptance responses are also relatively common in Chinese. This paper explores a number of hypotheses associated with these issues. It reports a study carried out in Mainland China and Hong Kong, and discusses the notion of Chinese modesty in relation to the findings

Majorana Fermion Induced Resonant Andreev Reflection

We describe experimental signatures of Majorana fermion edge states, which form at the interface between a superconductor and the surface of a topological insulator. If a lead couples to the Majorana fermions through electron tunneling, the Majorana fermions induce \textit{resonant} Andreev reflections from the lead to the grounded superconductor. The linear tunneling conductance is $0$ ($2 e^2/h$) if there is an even (odd) number of vortices in the superconductor. Similar resonance occurs for tunneling into the zero mode in the vortex core. We also study the current and noise of a two-lead device.Comment: 4 pages, 3 figures. Discussion on STM tunneling into the Majorana zero mode in the vortex core is adde

Raman signature of the U(1) Dirac spin-liquid state in spin-1/2 kagome system

We followed the Shastry--Shraiman formulation of Raman scattering in Hubbard systems and considered the Raman intensity profile in the spin-1/2 "perfect" kagome lattice herbertsmithite ZnCu_3(OH)_6Cl_2, assuming the ground state is well-described by the U(1) Dirac spin-liquid state. In the derivation of the Raman T-matrix, we found that the spin chirality term appears in the A_{2g} channel in the kagome lattice at the t^4/(\omega_i-U)^3 order, but (contrary to the claims by Shastry and Shraiman) vanishes in the square lattice to that order. In the ensuing calculations on the spin-1/2 kagome lattice, we found that the Raman intensity profile in the E_g channel is invariant under an arbitrary rotation in the kagome plane, and that in all (A_{1g}, E_g, and A_{2g}) symmetry channels the Raman intensity profile contains broad continua that display power-law behaviors at low energy, with exponent approximately equal to 1 in the A_{2g} channel and exponent approximately equal to 3 in the E_g and the A_{1g} channels. For the A_{2g} channel, the Raman profile also contains a characteristic 1/\omega singularity, which arose in our model from an excitation of the emergent U(1) gauge field.Comment: 17 pages, 19 figures; Minor revisions, updated to be consistent with the published versio

Selective Equal-Spin Andreev Reflections Induced by Majorana Fermions

In this work, we find that Majorana fermions induce selective equal spin Andreev reflections (SESARs), in which incoming electrons with certain spin polarization in the lead are reflected as counter propagating holes with the same spin. The spin polarization direction of the electrons of this Andreev reflected channel is selected by the Majorana fermions. Moreover, electrons with opposite spin polarization are always reflected as electrons with unchanged spin. As a result, the charge current in the lead is spin-polarized. Therefore, a topological superconductor which supports Majorana fermions can be used as a novel device to create fully spin-polarized currents in paramagnetic leads. We point out that SESARs can also be used to detect Majorana fermions in topological superconductors.Comment: 5 pages, 3 figures. Comments are welcome. Title changed to match published versio

Language Planning in Multilingual Singapore : Concerns, Issues And Problems

Language planning policy is often conceived as a political and administrative activity by a governmental authority (Jernudd and Gupta, 1971). According to Ager (2001), the ability to use many languages can represent a major economic resource and thus there is a need for the government to coordinate the planning of language as a resource for societal development. Singapore has frequently been cited as a successful case study of governmental intervention in language planning. The rational, centralized and top-down status planning by governmental authority has resulted in the adoption of English as a medium of communication in a multilinguistic society and a high level of communicative integration between different ethnic groups (Kaplan & Baldauf, 2003;Shepherd, 2003; Goh, 2004). However, beneath the success story of Singapore's language planning policy, there exist a number of problems, issues and concerns. This article will flesh out in greater detail the language ideology, rationale and effects of its language planning implementation. In particular, it will examine some current potentially fractious language planning issues in the official language planning policy

Power-law Conductivity inside the Mott gap: application to κ−(BEDT−TTF)2Cu2(CN)3\kappa-(BEDT-TTF)_2Cu_2(CN)_3

The charge dynamics of spin-liquid states described by U(1) gauge theory coupling to fermionic spinons is discussed in this paper. We find that the gapless spinons give rise to a power law optical conductivity inside the charge gap. The theory is applied to explain the unusual optical conductivity observed recently in the organic compound $\kappa-(BEDT-TTF)_2Cu_2(CN)_3$. We also propose an optical experiment to search for the in-gap excitations in the Kagome spin liquid insulator.Comment: 10 pages, 2 figure