17 research outputs found
. 1021 Año 21 (2022) marzo. El Tlacuache
No full textLa vida cotidiana de los diferentes pueblos de nuestro país se ha visto transformada desde hace dos años debido a la declaratoria, por parte de la Organización Mundial de la Salud, por la pandemia de SARS-COV2. Sin embargo, la vida dentro de las comunidades de origen y tradición indígena siguió su curso con ciertas adaptaciones en sus ciclos rituales, los cuales representan para éstas un mecanismo de cohesión y reafirmación de su identidad como grupo.- El señor de Mazatepec
y la feria en su honor Transformación y continuidad en el poniente de Morelos por Erandy Toledo Alvarado.Las mandas en el Santuario, Mazatepec, Morelos. Marzo 2018. Crédito: Erandy Toledo Alvarado. “Fachada”. Templo del Señor del Calvario (Mazatepec) Estado de Morelos, México, julio 2011. Álbum 2608. Crédito: Catedrales e Iglesias. CC BY 2.0. https://bit.ly/3qnIF71Von Mentz, Brígida (1988), Pueblos de indios, mulatos y mestizos 1770-1870. Los campesinos y las transformaciones protoindustriales en el poniente de Morelos, Ediciones Casa chata/CIESAS, México.ication and Dating. Historical Archaeology. Vol. 36, No.2:111-127
Just enough inflation
No full textSchwarz D, Ramirez E. Just enough inflation. Presented at the 12th Marcel Grossmann Meeting On General Relativity (MG 12), Paris, France
Predictions of just-enough inflation
No full textRamirez E, Schwarz D. Predictions of just-enough inflation. Physical Review D. 2012;85(10): 103516.We find the best-fit cosmological parameters for a scenario of inflation withonly the sufficient amount of accelerated expansion for the potential. While for the simplest scenario of chaotic inflation all observableprimordial fluctuations cross the Hubble horizon during the slow-roll epoch,for the scenario of just-enough inflation the slow-roll conditions are violatedat the largest length scales. Performing a numerical mode-by-mode integrationfor the perturbations on the largest scales and comparing the predictedanisotropies of the cosmic microwave background to results from the WMAP 7yrdata analysis, we find the initial conditions in agreement with currentcosmological data. In contrast to the simplest chaotic model for the quarticpotential, the just-enough inflation scenario is not ruled out. Although thisscenario naturally gives rise to a modification of the first multipoles, for aquartic potential it cannot explain the lack of power at the largest angularscales
inflation is not exclude
No full textRamirez E, Schwarz D. inflation is not exclude. Phys.Rev.D. 2009;80(2): 023525.We present counterexamples to the claim that the lambda phi(4) inflaton potential is excluded by recent cosmological data. Finding counterexamples requires that the actually observed primordial fluctuations are generated at the onset of the slow-roll regime of inflation. This setup for the initial conditions is therefore different from the usual scenario of chaotic inflation where inflation starts long before the observed fluctuations are created. The primordial power spectrum of "just enough" chaotic inflation violates scale invariance in a way consistent with observations
El Tlacuache Núm. 933 (2020). 933 Año 19 (2020) mayo. El Tlacuache
No full text- La pandemia COVID 19, un mar de angustias, dilemas y retos, II. Sentimientos dilemas y retos en la religiosidad popular, frente a la pandemia COVID19 por Luis Miguel Morayta Mendoza. - Caminando con el miedo en el barrio de Acapantzingo, Cuernavaca , Morelos por Víctor Hugo Valencia Valera. - La pandemia desde el nororiente morelense por Karina Ramírez Villaseñor. - Dilema y tradición, en los rituales dedicados a la muerte de Cristo, en un barrio de Ocotepec, Morelos por Luis Miguel Morayta Mendoza. - El quinto viernes de Cuaresma en Mazatepec ante la pandemia por Erandy Toledo Alvarado. - Tlayacapan de cara a la diversidad: una perspectiva ante el COVID-19 por Jorge Alberto Linares Ramírez y Marina Pablo Norman
Inflationary slow-roll formalism and perturbations in the Randall-Sundrum type II braneworld
No full textNo description supplie
Stochastic approaches to inflation model building
No full textWhile inflation gives an appealing explanation of observed cosmological data, there are a wide range of different inflation models, providing differing predictions for the initial perturbations. Typically models are motivated either by fundamental physics considerations or by simplicity. An alternative is to generate large numbers of models via a random generation process, such as the flow equations approach. The flow equations approach is known to predict a definite structure to the observational predictions. In this paper, we first demonstrate a more efficient implementation of the flow equations exploiting an analytic solution found by Liddle (2003). We then consider alternative stochastic methods of generating large numbers of inflation models, with the aim of testing whether the structures generated by the flow equations are robust. We find that while typically there remains some concentration of points in the observable plane under the different methods, there is significant variation in the predictions amongst the methods considered
Stochastic approaches to inflation model building
No full textWhile inflation gives an appealing explanation of observed cosmological data, there are a wide range of different inflation models, providing differing predictions for the initial perturbations. Typically models are motivated either by fundamental physics considerations or by simplicity. An alternative is to generate large numbers of models via a random generation process, such as the flow equations approach. The flow equations approach is known to predict a definite structure to the observational predictions. In this paper, we first demonstrate a more efficient implementation of the flow equations exploiting an analytic solution found by Liddle (2003). We then consider alternative stochastic methods of generating large numbers of inflation models, with the aim of testing whether the structures generated by the flow equations are robust. We find that while typically there remains some concentration of points in the observable plane under the different methods, there is significant variation in the predictions amongst the methods considered
Braneworld flow equations
No full textWe generalize the flow equations approach to inflationary model building to the Randall–Sundrum Type II braneworld scenario. As the flow equations are quite insensitive to the expansion dynamics, we find results similar to, though not identical to, those found in the standard cosmology
