6 documents found, page 1 of 1
Identifying an effective mobile health application for the self-management of a...
Tan, Rachel; Cvetkovski, Biljana; Koshelev, Alexey; O'Hehir, Robyn; Lourenço, Olga; Bousquet, Jean; Bosnic-Anticevich, SinthiaObjective: People with allergic rhinitis (AR) often self-manage in the community pharmacy setting without consulting health care professionals and trivialize their comorbidities such as asthma. A mobile health application (mHealth app) with a self-monitoring and medication adherence system can assist with the appropriate self-management of AR and asthma. This study aimed to identify an app effective for the sel...
Towards conformally flat, non-Kasner vacuum solution in infinite derivative gra...
Koshelev, Alexey; Marto, João; Mazumdar, AnupamIn this paper, we will show that the equations of motion of the quadratic in curvature, ghost free, infinite derivative theory of gravity will not permit an anisotropic collapse of a homogeneous Universe such as Kasner-type vacuum solution. However, such a solution is shown to be admissible in the local quadratic curvature gravity. Therefore pointing towards the crucial role played by the non-local infinite der...
Schwarzschild 1/r-singularity is not permissible in ghost free quadratic curvat...
Koshelev, Alexey; Marto, João; Mazumdar, AnupamIn this paper we will study the complete equations of motion for a ghost free quadratic curvature infinite derivative gravity. We will argue that within the scale of non-locality, Schwarzschild-type singular metric solution is not permissible. Therefore, Schwarzschild-type vacuum solution which is a prediction in Einstein-Hilbert gravity may not persist within the region of non-locality. We will also show that ...
Conformally-flat, non-singular static metric in infinite derivative gravity
Buoninfante, Luca; Koshelev, Alexey; Lambiase, Gaetano; Marto, João; Mazumdar, AnupamIn Einstein's theory of general relativity the vacuum solution yields a blackhole with a curvature singularity, where there exists a point-like source with a Dirac delta distribution which is introduced as a boundary condition in the static case. It has been known for a while that ghost-free infinite derivative theory of gravity can ameliorate such a singularity at least at the level of linear perturbation arou...
Non-singular rotating metric in ghost-free infinite derivative gravity
Buoninfante, Luca; Cornell, Alan; Harmsen, Gerhard; Koshelev, Alexey; Lambiase, Gaetano; Marto, João; Mazumdar, AnupamIt is well-known that the vacuum solution of Einstein's theory of general relativity provides a rotating metric with a ring singularity, which is covered by the inner and outer horizons, and an ergo region. In this paper, we will discuss how ghost free, quadratic curvature, Infinite Derivative Gravity (IDG) may resolve the ring-type singularity in nature. It is well-known that a class of IDG actions admit linea...
Effective models of inflation from a non-local framework
Koshelev, Alexey; Kumar, K. Sravan; Moniz, PauloThe dilaton is a possible inflaton candidate following recent CMB data allowing a non-minimal coupling to the Ricci curvature scalar in the early Universe. In this paper, we introduce an approach that has seldom been used in the literature, namely dilaton inflation with non-local features. More concretely, employing non-local features expressed in J. High Energy Phys. 04 (2007) 029, we study quadratic variation...