Unparticle inspired corrections to the Gravitational Quantum Well

We consider unparticle inspired corrections of the type ${(\frac{R_{G}}{r})}^\beta$ to the Newtonian potential in the context of the gravitational quantum well. The new energy spectrum is computed and bounds on the parameters of these corrections are obtained from the knowledge of the energy eigenvalues of the gravitational quantum well as measured by the GRANIT experiment.Comment: Revtex4 file, 4 pages, 2 figures and 1 table. Version to match the one published at Physical Review

Signals for New Spin-1 Resonances in Electroweak Gauge Boson Pair Production at the LHC

The mechanism of electroweak symmetry breaking (EWSB) will be directly scrutinized soon at the CERN Large Hadron Collider (LHC). We analyze the LHC potential to look for new vector bosons associated with the EWSB sector. We present a possible model independent approach to search for these new spin--1 resonances. We show that the analyses of the processes pp --> l^+ l^- Emiss_T, l^\pm j j Emiss_T, l^\pm l^+ l^- Emiss_T, and l^+ l^- j j (with l=e or \mu and j=jet) have a large reach at the LHC and can lead to the discovery or exclusion of many EWSB scenarios such as Higgsless models.Comment: 10 pages, 11 figure

Fisher matrix forecasts for astrophysical tests of the stability of the fine-structure constant

We use Fisher Matrix analysis techniques to forecast the cosmological impact of astrophysical tests of the stability of the fine-structure constant to be carried out by the forthcoming ESPRESSO spectrograph at the VLT (due for commissioning in late 2017), as well by the planned high-resolution spectrograph (currently in Phase A) for the European Extremely Large Telescope. Assuming a fiducial model without $\alpha$ variations, we show that ESPRESSO can improve current bounds on the E\"{o}tv\"{o}s parameter---which quantifies Weak Equivalence Principle violations---by up to two orders of magnitude, leading to stronger bounds than those expected from the ongoing tests with the MICROSCOPE satellite, while constraints from the E-ELT should be competitive with those of the proposed STEP satellite. Should an $\alpha$ variation be detected, these measurements will further constrain cosmological parameters, being particularly sensitive to the dynamics of dark energy.Comment: Phys. Lett. B (in press

Influence of the external pressure on the quantum correlations of molecular magnets

The study of quantum correlations in solid state systems is a large avenue for research and their detection and manipulation are an actual challenge to overcome. In this context, we show by using first-principles calculations on the prototype material KNaCuSi$_{4}$O$_{10}$ that the degree of quantum correlations in this spin cluster system can be managed by external hydrostatic pressure. Our results open the doors for research in detection and manipulation of quantum correlations in magnetic systems with promising applications in quantum information science

Recomendações técnicas para o cultivo de abobora (Cucurbita moschata L.) no Amapá.

Introdução; Botanica; Cultivares; Clima e época de plantio; Solo; Adubação; Preparo do solo; Preparo de mudas; Transplante; Crescimento e desenvolvimento; Tratos culturais; Doenças; Rotação de culturas; Colheita; Armazenamento; Mercado; Coeficientes técnicos; Bibliografia consultada.bitstream/item/97835/1/CPAF-AP-1999-Recomendacoes-abobora.pd

Olericultura tropical no Amapá.

As hortaliças se destacam como fontes de carboidratos, vitaminas e sais minerais, necessários para o crescimento e desenvolvimento humano. No entanto, os horticultores do trópico úmido amazônico, enfrentam enormes dificuldades para produzir hortaliças e atender à crescente demanda, principalmente nos grandes centros hurbanos. Problemas como a baixa fertilidade dos solos da floresta tropical de terra firme, as elevadas temperaturas, altos índices de pluviosidade e umidade relativa do ar, e a incidência de pragas, são fatores que dificultam a produção de hortaliças neste ecossistema. Nesse contexto, a Embrapa Amapá vem recomendar cultivares e processos de cultivo, que apresentem bom desempenho nas condições amapaenses.bitstream/item/97365/1/CPAF-AP-2001-Olericultura-tropical.pd