Nuclear response functions with finite range Gogny force: tensor terms and instabilities

A fully-antisymmetrized random phase approximation calculation employing the continued fraction technique is performed to study nuclear matter response functions with the finite range Gogny force. The most commonly used parameter sets of this force, as well as some recent generalizations that include the tensor terms are considered and the corresponding response functions are shown. The calculations are performed at the first and second order in the continued fraction expansion and the explicit expressions for the second order tensor contributions are given. Comparison between first and second order continued fraction expansion results are provided. The differences between the responses obtained at the two orders turn to be more pronounced for the forces including tensor terms than for the standard Gogny ones. In the vector channels the responses calculated with Gogny forces including tensor terms are characterized by a large heterogeneity, reflecting the different choices for the tensor part of the interaction. For sake of comparison the response functions obtained considering a G-matrix based nuclear interaction are also shown. As first application of the present calculation, the possible existence of spurious finite-size instabilities of the Gogny forces with or without tensor terms has been investigated. The positive conclusion is that all the Gogny forces, but the GT2 one, are free of spurious finite-size instabilities. In perspective, the tool developed in the present paper can be inserted in the fitting procedure to construct new Gogny-type forces

Multiparticle Quantum Superposition and Stimulated Entanglement by Parity Selective Amplification of Entangled States

A multiparticle quantum superposition state has been generated by a novel phase-selective parametric amplifier of an entangled two-photon state. This realization is expected to open a new field of investigations on the persistence of the validity of the standard quantum theory for systems of increasing complexity, in a quasi decoherence-free environment. Because of its nonlocal structure the new system is expected to play a relevant role in the modern endeavor on quantum information and in the basic physics of entanglement.Comment: 13 pages and 3 figure

Penentuan Kapasitas Vektorial Anopheles Spp. Di Desa Rejeki Kecamatan Palolo Kabupaten Sigi Sulawesi Tengah

Malaria remains a public health problem public health problem in Sulawesi, especially in Rejeki Village, Palolo Subdistrict, Sigi District. Rejeki village was a high endemic area of malaria from 2009 until 2012. In 2013, there was no positive case malaria, but the environmental condision there were very approriate to malaria transmission. Recently, in Indonesia there was lack of data about vectorial status and host identification as Anopheles bloodmeal. This research aimed to determine the vectorial capacity value of Anopheles spp. This Study was descriptive obsevational analysis with cross sectional design. The sample was female Anopheles spp. that caught allnight from 06.00 pm up to 06.00 am, and the mosquitoes that caught at the rest time in early morning. The collection was held for 6 times start from April until September. The mosquitoes that collected in Rejeki village were An. barbirostris, An. Nigerrimus, An. tesselatus, An. vagus, An. indifinitus, and An. umbrosus. The result showed the species which potency as malaria vector that An. barbirostris (0,001-0,003) and An. Nigerrimus (0,001-0,058). The average age of An. barbirostris was 8,58-13,78 days and An. Nigerrimus was 4,24-13,78 days. ELISA bloodmeals test resulted mosquitoes which consumed human bloodmeals are An. barbirostris and An. Nigerrimus, include in anthropophilic and tend to endophagic. Integrated vector control method is recommended to be applied in effort to maintained low malaria endemicity. Cattle barrier was a good solution for the control of malaria

Pain modulation by illusory body rotation: A new way to disclose the interaction between the vestibular system and pain processing

Background Clinical and experimental evidence advocates a structural and functional link between the vestibular and other sensory systems. For instance, visuo‐vestibular and vestibular–somatosensory interactions have been widely reported. However, whether visual inputs carrying vestibular information can modulate pain is not yet clear. Recent evidence using natural vestibular stimulation or moving visual stimuli, points at an unspecific effect of distraction. Methods By using immersive virtual reality (VR), we created a new way to prompt the vestibular system through the vision of static visual cues, studying the possible interaction with pain. Twenty‐four healthy participants were visually immersed in a virtual room which could appear with five different degrees of rotation in the sagittal axis, either towards the right, left or with no rotation. Participants' heat pain thresholds and subjective reports of perceived body rotation, sense of presence and attention were measured. Results ‘Being’ in a tilted room induced the sensation of body rotation in our participants, even though they were always in an upright position. We also found that rotating the visual scenario can modulate the participants' pain thresholds, determining a significant increase when a left tilt is displayed. In addition, a positive correlation between the perceived body midline rotation and pain threshold was found when the virtual room was titled 15 degrees toward the left. Importantly, all VR conditions were found to be equally distractive. Conclusions Vestibular information present in static visual cues can modulate experimentally‐induced acute pain according to a side‐dependent manner and bypassing supramodal attentional mechanisms. These findings may help refining pain management approaches based on multimodal stimulation. Significance This study explored how the visualization of static environments in immersive virtual reality can lead to pain threshold modulation through the activation of the vestibular system. Immersion into rotated virtual environments led to the illusory sensation of body rotation, and this sensation was found to be related with a modulation of pain perception. Possible analgesic effects due to distraction could be ruled out. These results expand our current knowledge about how the visual, vestibular and somatosensory (pain) systems interact. These findings may influence future pain treatment strategies based on multisensory stimulation

Effects of Intrabeam Scattering and Synchrotron Radiation Damping when Reducing Transverse Emittances to Augment the LHC Luminosity

The effects of intrabeam scattering (IBS) and synchrotron radiation on the expected evolution of the LHC and SLHC beam emittances during physics coasts at 7 TeV are examined for the nominal beam and beams with reduced emittances

Input-Output Relations in Optical Cavities: a Simple Point of View

In this work we present a very simple approach to input-output relations in optical cavities, limiting ourselves to one- and two-photon states of the field. After field quantization, we derive the non-unitary transformation between {\em Inside} and {\em Outside} annihilation and creation operators. Then we express the most general two-photon state generated by {\em Inside} creation operators, through base states generated by {\em Outside} creation operators. After renormalization of coefficients of inside two-photon state, we calculate the outside photon-number probability distribution in a general case. Finally we treat with some detail the single mode and symmetrical cavity case.Comment: 34 pages, 5 figures jpg, LaTe